Company lists · Data refreshed September 2026
Top 25 Due diligence consulting firms based in the United Kingdom
RevenueBase identified 66 company matches for due diligence consulting firms associated with the United Kingdom as of September 2026 and tracks 569 professional contacts across them, including 277 with verified work emails and 83 with mobile numbers. London is the largest hub.
This list covers company matches for due diligence consulting firms associated with the United Kingdom, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 1, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest due diligence consulting firms based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 157 contacts → | ||||
Exact match “By leveraging cutting-edge technology and experienced analysts, Neotas are going beyond and setting new standards in Due Diligence, Staff Screening, and Compliance.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 2 | 48 contacts → | ||||
Exact match “We empower private equity firms to make sound investment decisions with our award-winning digital due diligence, whilst supporting portfolio companies through necessary digital…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 3 | 47 contacts → | ||||
Exact match “On the leading edge of innovation in commercial real estate transactions, GRS an NV5 Company is one of the largest national provider CRE due diligence services.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 4 | 31 contacts → | ||||
Exact match “RingStone works with investors, software, and tech-enabled companies to add value to their businesses and investments.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 5 | 24 contacts → | ||||
Exact match “Connell Consulting has a reputation for carrying out reliable and well-researched commercial due diligence, strategic and operational improvement projects, delivered by a…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 6 | 23 contacts → | ||||
Exact match “Ground Truth Intelligence is the global due diligence platform designed for an ever-changing world.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 7 | 15 contacts → | ||||
Exact match “Hartford Advisers is a specialist intelligence, research and due diligence firm.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 8 | 15 contacts → | ||||
Exact match “Delivering financial clarity and confidence to decision-makers!” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 9 | 11 contacts → | ||||
Exact match “Due Diligence as it should be.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 10 | 11 contacts → | ||||
Exact match “Confidas People - People Assessment for investment.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 11 | 9 contacts → | ||||
Exact match “Luminii Consulting is an award-winning consultancy recognised as the CDD Provider of the Year at the 2023 Real Deals Private Equity Awards.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 12 | 9 contacts → | ||||
Exact match “Strategic intelligence and high end due diligence provider to global corporations and investors.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 13 | 8 contacts → | ||||
Exact match “Osterwald Rathbone & Partners focuses on providing industry-led professional consulting advice to corporate entities & their legal representatives in a variety of situations…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 14 | 7 contacts → | ||||
Exact match “We advise UK owner-managed businesses on buying, selling, valuing and funding companies in the £500k to £10m deal range.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 15 | 5 contacts → | ||||
Exact match “Ardra Partners is a specialist consultant that provides services to a selected group of clients in a range of high growth subsectors.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 16 | 4 contacts → | ||||
Exact match “De Vere Intellica has provided a wide range of services to the Financial Services, Legal, Insolvency, Corporate and Not-for Profit sectors since the early 1990s.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 17 | 4 contacts → | ||||
Exact match “Ida Business Consulting was founded by Murat Barin who is a dual qualified accountant in Turkey and England.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 18 | 4 contacts → | ||||
Exact match “Tech Stack Authority is a leader in technical assessment and due diligence, providing fast, high-quality and cost-efficient tech diagnostics to business leaders to help them drive…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 19 | 4 contacts → | ||||
Exact match “Protect your brand & culture with M.INT.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 20 | 3 contacts → | ||||
Exact match “We help private equity and venture capital funds optimise portfolio value.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 21 | 2 contacts → | ||||
Exact match “Proponent Capital is a business that provides consulting services to sophisticated corporate investors to help them understand their opportunities to invest in transactions which…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 22 | 2 contacts → | ||||
Exact match “4D conducts due diligence services into technology, products, sales, and companies on behalf of our clients.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 23 | 1 contacts → | ||||
Exact match “From conducting independent business evaluations, creating powerful data insight and analysis, managing data compliance risks, and developing your future strategy, everything we…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 24 | 1 contacts → | ||||
Exact match “Guiding businesses and investors through the toughest technology choices, from diligence to delivery.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
| 25 | 1 contacts → | ||||
Exact match “High Level Due Diligence | Risk Advisory | Problem Solving | Non-Executive Director | Executive Coaching Andy Wynn, Principal 35+ years experience, chair, CEO, director positions…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “due diligence consulting firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 66 due diligence consulting firms based in the United Kingdom
See the full list, filter by size, metro and specialty, and access 277 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Due diligence consulting firms based in the United Kingdom at a glance
As of Sep 1, 2026Companies by employee count
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United Kingdom whose business descriptions match “due diligence consulting firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 277 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 1, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Due diligence consulting firms by metro
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “due diligence consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many due diligence consulting firms are there based in the United Kingdom?
RevenueBase identified 66 company matches for due diligence consulting firms associated with the United Kingdom as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Neotas tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most due diligence consulting firms?
London leads with 46 company records, followed by Bishops Stortford (1) and St Albans (1).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 277 professional contacts with verified work emails tracked across these 66 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 1, 2026.
Ready to reach these companies? Verified emails and direct dials for all 66 due diligence consulting firms based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
Due diligence consulting firms by geography
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- Due diligence consulting firms based in France
- Due diligence consulting firms based in Germany
- Due diligence consulting firms based in Canada
- Due diligence consulting firms based in Spain
- Due diligence consulting firms based in Italy
- Due diligence consulting firms based in the Netherlands
- Due diligence consulting firms based in Mexico
- Due diligence consulting firms based in Australia
- Due diligence consulting firms based in South Africa
- Due diligence consulting firms based in Sao Paulo, Brazil
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Due diligence consulting firms based in the United States
- Due diligence consulting firms based in Brazil
- Due diligence consulting firms based in France
- Due diligence consulting firms based in Germany
- Due diligence consulting firms based in Canada
- Due diligence consulting firms based in Spain
Company intelligence · public preview
Top 25 due diligence consulting firms based in the United Kingdom
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 66 matching company records for due diligence consulting firms based in the United Kingdom, with 569 tracked contacts and 277 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 1, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 due diligence consulting firms based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | HQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 157 contacts → |
“By leveraging cutting-edge technology and experienced analysts, Neotas are going beyond and setting new standards in Due Diligence, Staff Screening, and Compliance.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | HQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 48 contacts → |
“We empower private equity firms to make sound investment decisions with our award-winning digital due diligence, whilst supporting portfolio companies through necessary digital…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | HQ: HQ not recorded; location: London, United KingdomReported employees: 1,001-5,000 | HQ not recorded; location: London, United Kingdom | 1,001-5,000 | Exact match | 47 contacts → |
“On the leading edge of innovation in commercial real estate transactions, GRS an NV5 Company is one of the largest national provider CRE due diligence services.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | HQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 31 contacts → |
“RingStone works with investors, software, and tech-enabled companies to add value to their businesses and investments.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 24 contacts → |
“Connell Consulting has a reputation for carrying out reliable and well-researched commercial due diligence, strategic and operational improvement projects, delivered by a…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 23 contacts → |
“Ground Truth Intelligence is the global due diligence platform designed for an ever-changing world.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 15 contacts → |
“Hartford Advisers is a specialist intelligence, research and due diligence firm.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | HQ: HQ not recorded; location: Pluckley, United KingdomReported employees: 11-50 | HQ not recorded; location: Pluckley, United Kingdom | 11-50 | Exact match | 15 contacts → |
“Delivering financial clarity and confidence to decision-makers!” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 11 contacts → |
“Due Diligence as it should be.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | HQ: HQ not recorded; location: Europe, United KingdomReported employees: 11-50 | HQ not recorded; location: Europe, United Kingdom | 11-50 | Exact match | 11 contacts → |
“Confidas People - People Assessment for investment.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | HQ: HQ not recorded; location: Manchester, United KingdomReported employees: 11-50 | HQ not recorded; location: Manchester, United Kingdom | 11-50 | Exact match | 9 contacts → |
“Luminii Consulting is an award-winning consultancy recognised as the CDD Provider of the Year at the 2023 Real Deals Private Equity Awards.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 9 contacts → |
“Strategic intelligence and high end due diligence provider to global corporations and investors.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | HQ: HQ not recorded; location: London, United KingdomReported employees: 1-10 | HQ not recorded; location: London, United Kingdom | 1-10 | Exact match | 8 contacts → |
“Osterwald Rathbone & Partners focuses on providing industry-led professional consulting advice to corporate entities & their legal representatives in a variety of situations…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | HQ: HQ not recorded; location: London, United KingdomReported employees: 1-10 | HQ not recorded; location: London, United Kingdom | 1-10 | Exact match | 7 contacts → |
“We advise UK owner-managed businesses on buying, selling, valuing and funding companies in the £500k to £10m deal range.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | HQ: HQ not recorded; location: London, United KingdomReported employees: 1-10 | HQ not recorded; location: London, United Kingdom | 1-10 | Exact match | 5 contacts → |
“Ardra Partners is a specialist consultant that provides services to a selected group of clients in a range of high growth subsectors.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 4 contacts → |
“De Vere Intellica has provided a wide range of services to the Financial Services, Legal, Insolvency, Corporate and Not-for Profit sectors since the early 1990s.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | HQ: HQ not recorded; location: London, United KingdomReported employees: 1-10 | HQ not recorded; location: London, United Kingdom | 1-10 | Exact match | 4 contacts → |
“Ida Business Consulting was founded by Murat Barin who is a dual qualified accountant in Turkey and England.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | HQ: HQ not recorded; location: London, United KingdomReported employees: 1-10 | HQ not recorded; location: London, United Kingdom | 1-10 | Exact match | 4 contacts → |
“Tech Stack Authority is a leader in technical assessment and due diligence, providing fast, high-quality and cost-efficient tech diagnostics to business leaders to help them drive…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | HQ: HQ not recorded; location: London, United KingdomReported employees: 1-10 | HQ not recorded; location: London, United Kingdom | 1-10 | Exact match | 4 contacts → |
“Protect your brand & culture with M.INT.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | HQ: HQ not recorded; location: London, United KingdomReported employees: 1-10 | HQ not recorded; location: London, United Kingdom | 1-10 | Exact match | 3 contacts → |
“We help private equity and venture capital funds optimise portfolio value.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | HQ: HQ not recorded; location: London, United KingdomReported employees: 1-10 | HQ not recorded; location: London, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Proponent Capital is a business that provides consulting services to sophisticated corporate investors to help them understand their opportunities to invest in transactions which…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 2 contacts → |
“4D conducts due diligence services into technology, products, sales, and companies on behalf of our clients.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | HQ: HQ not recorded; location: Sunderland, United KingdomReported employees: 11-50 | HQ not recorded; location: Sunderland, United Kingdom | 11-50 | Exact match | 1 contacts → |
“From conducting independent business evaluations, creating powerful data insight and analysis, managing data compliance risks, and developing your future strategy, everything we…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | HQ: HQ not recorded; location: London, United KingdomReported employees: 1-10 | HQ not recorded; location: London, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Guiding businesses and investors through the toughest technology choices, from diligence to delivery.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | HQ: HQ not recorded; location: Old Basing, United KingdomReported employees: 1-10 | HQ not recorded; location: Old Basing, United Kingdom | 1-10 | Exact match | 1 contacts → |
“High Level Due Diligence | Risk Advisory | Problem Solving | Non-Executive Director | Executive Coaching Andy Wynn, Principal 35+ years experience, chair, CEO, director positions…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 66 company matches
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Due diligence consulting firms: dataset insights
September 1, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
66 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 1, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Due diligence consulting firms by metro
Questions about this company list
What does Exact match mean for due diligence consulting firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many due diligence consulting firms did RevenueBase find based in the United Kingdom?
The saved snapshot records 66 matching company records, 569 tracked contacts and 277 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 1, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Due diligence consulting firms by geography
- Due diligence consulting firms based in the United States
- Due diligence consulting firms based in Brazil
- Due diligence consulting firms based in France
- Due diligence consulting firms based in Germany
- Due diligence consulting firms based in Canada
- Due diligence consulting firms based in Spain
- Due diligence consulting firms based in Italy
- Due diligence consulting firms based in the Netherlands
- Due diligence consulting firms based in Mexico
- Due diligence consulting firms based in Australia
- Due diligence consulting firms based in South Africa
- Due diligence consulting firms based in Sao Paulo, Brazil
Cite this list
RevenueBase Data Team. Top 25 due diligence consulting firms based in the United Kingdom. Snapshot: September 1, 2026. https://revenuebase.ai/companies/due-diligence-consulting-firms/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Due diligence consulting firms based in the United States
- Due diligence consulting firms based in Brazil
- Due diligence consulting firms based in France
- Due diligence consulting firms based in Germany
- Due diligence consulting firms based in Canada
- Due diligence consulting firms based in Spain
Company intelligence · public preview
Top 25 due diligence consulting firms based in the United Kingdom
RevenueBase records 66 matching company records for due diligence consulting firms based in the United Kingdom, with 569 tracked contacts and 277 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 1, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 due diligence consulting firms based in the United Kingdom
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | HQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 157 contacts → |
“By leveraging cutting-edge technology and experienced analysts, Neotas are going beyond and setting new standards in Due Diligence, Staff Screening, and Compliance.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | HQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 48 contacts → |
“We empower private equity firms to make sound investment decisions with our award-winning digital due diligence, whilst supporting portfolio companies through necessary digital…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | HQ: HQ not recorded; location: London, United KingdomReported employees: 1,001-5,000 | HQ not recorded; location: London, United Kingdom | 1,001-5,000 | Exact match | 47 contacts → |
“On the leading edge of innovation in commercial real estate transactions, GRS an NV5 Company is one of the largest national provider CRE due diligence services.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | HQ: HQ not recorded; location: London, United KingdomReported employees: 51-200 | HQ not recorded; location: London, United Kingdom | 51-200 | Exact match | 31 contacts → |
“RingStone works with investors, software, and tech-enabled companies to add value to their businesses and investments.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 24 contacts → |
“Connell Consulting has a reputation for carrying out reliable and well-researched commercial due diligence, strategic and operational improvement projects, delivered by a…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 23 contacts → |
“Ground Truth Intelligence is the global due diligence platform designed for an ever-changing world.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 15 contacts → |
“Hartford Advisers is a specialist intelligence, research and due diligence firm.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | HQ: HQ not recorded; location: Pluckley, United KingdomReported employees: 11-50 | HQ not recorded; location: Pluckley, United Kingdom | 11-50 | Exact match | 15 contacts → |
“Delivering financial clarity and confidence to decision-makers!” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 11 contacts → |
“Due Diligence as it should be.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | HQ: HQ not recorded; location: Europe, United KingdomReported employees: 11-50 | HQ not recorded; location: Europe, United Kingdom | 11-50 | Exact match | 11 contacts → |
“Confidas People - People Assessment for investment.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | HQ: HQ not recorded; location: Manchester, United KingdomReported employees: 11-50 | HQ not recorded; location: Manchester, United Kingdom | 11-50 | Exact match | 9 contacts → |
“Luminii Consulting is an award-winning consultancy recognised as the CDD Provider of the Year at the 2023 Real Deals Private Equity Awards.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 9 contacts → |
“Strategic intelligence and high end due diligence provider to global corporations and investors.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | HQ: HQ not recorded; location: London, United KingdomReported employees: 1-10 | HQ not recorded; location: London, United Kingdom | 1-10 | Exact match | 8 contacts → |
“Osterwald Rathbone & Partners focuses on providing industry-led professional consulting advice to corporate entities & their legal representatives in a variety of situations…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | HQ: HQ not recorded; location: London, United KingdomReported employees: 1-10 | HQ not recorded; location: London, United Kingdom | 1-10 | Exact match | 7 contacts → |
“We advise UK owner-managed businesses on buying, selling, valuing and funding companies in the £500k to £10m deal range.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | HQ: HQ not recorded; location: London, United KingdomReported employees: 1-10 | HQ not recorded; location: London, United Kingdom | 1-10 | Exact match | 5 contacts → |
“Ardra Partners is a specialist consultant that provides services to a selected group of clients in a range of high growth subsectors.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 4 contacts → |
“De Vere Intellica has provided a wide range of services to the Financial Services, Legal, Insolvency, Corporate and Not-for Profit sectors since the early 1990s.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | HQ: HQ not recorded; location: London, United KingdomReported employees: 1-10 | HQ not recorded; location: London, United Kingdom | 1-10 | Exact match | 4 contacts → |
“Ida Business Consulting was founded by Murat Barin who is a dual qualified accountant in Turkey and England.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | HQ: HQ not recorded; location: London, United KingdomReported employees: 1-10 | HQ not recorded; location: London, United Kingdom | 1-10 | Exact match | 4 contacts → |
“Tech Stack Authority is a leader in technical assessment and due diligence, providing fast, high-quality and cost-efficient tech diagnostics to business leaders to help them drive…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | HQ: HQ not recorded; location: London, United KingdomReported employees: 1-10 | HQ not recorded; location: London, United Kingdom | 1-10 | Exact match | 4 contacts → |
“Protect your brand & culture with M.INT.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | HQ: HQ not recorded; location: London, United KingdomReported employees: 1-10 | HQ not recorded; location: London, United Kingdom | 1-10 | Exact match | 3 contacts → |
“We help private equity and venture capital funds optimise portfolio value.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | HQ: HQ not recorded; location: London, United KingdomReported employees: 1-10 | HQ not recorded; location: London, United Kingdom | 1-10 | Exact match | 2 contacts → |
“Proponent Capital is a business that provides consulting services to sophisticated corporate investors to help them understand their opportunities to invest in transactions which…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | HQ: HQ not recorded; location: London, United KingdomReported employees: 11-50 | HQ not recorded; location: London, United Kingdom | 11-50 | Exact match | 2 contacts → |
“4D conducts due diligence services into technology, products, sales, and companies on behalf of our clients.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | HQ: HQ not recorded; location: Sunderland, United KingdomReported employees: 11-50 | HQ not recorded; location: Sunderland, United Kingdom | 11-50 | Exact match | 1 contacts → |
“From conducting independent business evaluations, creating powerful data insight and analysis, managing data compliance risks, and developing your future strategy, everything we…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | HQ: HQ not recorded; location: London, United KingdomReported employees: 1-10 | HQ not recorded; location: London, United Kingdom | 1-10 | Exact match | 1 contacts → |
“Guiding businesses and investors through the toughest technology choices, from diligence to delivery.” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | HQ: HQ not recorded; location: Old Basing, United KingdomReported employees: 1-10 | HQ not recorded; location: Old Basing, United Kingdom | 1-10 | Exact match | 1 contacts → |
“High Level Due Diligence | Risk Advisory | Problem Solving | Non-Executive Director | Executive Coaching Andy Wynn, Principal 35+ years experience, chair, CEO, director positions…” Recorded description excerpt · September 1, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Due diligence consulting firms: dataset insights
September 1, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
66 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 1, 2026.
Publisher-reported method study
The published RevenueBase SmartSearch benchmark
86% good or better at Exact
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. It reports 86% of Exact matches judged good or better, and 77% for a 240-pair sample of one- or two-word categories. This evaluates the method across study queries rather than auditing this individual list.
Read the study and full methodology ↗RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Due diligence consulting firms by metro
Questions about this company list
What does Exact match mean for due diligence consulting firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many due diligence consulting firms did RevenueBase find based in the United Kingdom?
The saved snapshot records 66 matching company records, 569 tracked contacts and 277 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 1, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 due diligence consulting firms based in the United Kingdom. Snapshot: September 1, 2026. https://revenuebase.ai/companies/due-diligence-consulting-firms/united-kingdom.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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