Company lists · Data refreshed August 2026
Top 25 List building services based in the United Kingdom
RevenueBase identified 3,609 list building services headquartered in the United Kingdom as of August 2026 and tracks 18,251 professional contacts across them, including 5,315 with verified work emails and 1,077 with mobile numbers. London is the largest hub.
This list covers list building services headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed August 29, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 list building services based in the United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 659 contacts → | ||||
Partial evidence “The FES Group is one of the largest independent technical services companies in the UK over 60 years of experience providing building services solutions to a wide range of…” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 236 contacts → | ||||
Indirect evidence “JCA is a multi-faceted engineering services and construction business.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| Try free | |||||
Not rated “RevenueBase is a B2B contact data platform. This directory is built from its company graph.” | |||||
| 3 | 145 contacts → | ||||
Indirect evidence “We turn visions into reality.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 108 contacts → | ||||
Indirect evidence “ANDEC SOLUTIONS LIMITED is a Construction company located in St.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 95 contacts → | ||||
Indirect evidence “What began as a small family-run business in 2007 has grown into one of the most trusted names in the industry.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 83 contacts → | ||||
Indirect evidence “UMC Architects are an owner-operated company, providing our clients with a 'best in class' service, focusing on the industrial sector.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 70 contacts → | ||||
Indirect evidence “Since formation in Westgreen have developed a reputation for our ability to deliver a high-quality bespoke service.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 70 contacts → | ||||
Partial evidence “Combined Facilities Management Ltd (CFM), established in 1974, is a highly experienced All Trades Building & Property Services contractor in N.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 67 contacts → | ||||
Indirect evidence “Formation Architects is an established AJ100 architectural practice.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 48 contacts → | ||||
Partial evidence “Established for over 30 years, the Carmel Group of companies deliver a full range of services covering the whole lifecycle of a building from concept and design through to…” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 46 contacts → | ||||
Partial evidence “Our expertise covers commercial and industrial buildings, the refurbishment and renovation of listed buildings, community builds, universities, colleges, schools, social housing…” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 46 contacts → | ||||
Indirect evidence “Knight Build, established in 1994, specialises in delivering some of the UK’s most challenging and prestigious projects.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 44 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 43 contacts → | ||||
Indirect evidence “We pride ourselves on offering a flexible and personal service to customers, we are growing from strength to strength with a targeted annual turnover of £50million, and now employ…” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 33 contacts → | ||||
Indirect evidence “Since formation in 1988 Mascott Construction has built an enviable reputation within the local construction industry for the delivery of bespoke, high-quality projects over a wide…” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 33 contacts → | ||||
Indirect evidence “Concept Bespoke was founded to simplify the design and build process.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 32 contacts → | ||||
Indirect evidence “The DE Group (UK) Ltd provide a suite of specialist services to the construction and property development sectors.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 30 contacts → | ||||
Partial evidence “At Seville our passion is building and maintaining homes and client’s building stock using the best materials and skills to deliver works to the highest possible standard –…” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 30 contacts → | ||||
Indirect evidence “FSH offer a range of services including new build, refurbishment, repairs, fit outs and re modelling works in the commercial, education, residential, social housing and care…” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 29 contacts → | ||||
Indirect evidence “Buzzoni can be your main contact to manage all trades: construction, mechanical, electrical and furniture.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 28 contacts → | ||||
Partial evidence “The HACS Group is a leading independent building and construction services contractor with a customer-driven approach and a reputation for efficient project management and…” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 27 contacts → | ||||
Indirect evidence “Ernest Park was established in 2013.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 27 contacts → | ||||
Partial evidence “Fleming have been providing exceptional building services for over 60 years with a notable reputation for delivering high quality, value for money projects.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 26 contacts → | ||||
Strong evidence “adi Building & Refurbishment provides a range of specialist design, construction, refurbishment and planned maintenance services to an ever increasing list of blue chip customers.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 25 contacts → | ||||
Indirect evidence “Deep Group London have a wealth of experience in a diverse range of projects, delivering quality service from project conception to finish.” Source: RevenueBase Database · checked Aug 29, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: list building services. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names list building services.
- Partial evidence
- Its own public description names part of list building services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name list building services. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 3,609 list building services based in the United Kingdom
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 5,315 reachable decision-makers.
Free signup · no credit card
List building services based in the United Kingdom at a glance
As of Aug 29, 2026Companies by employee count
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among list building services, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United Kingdom whose own description of what they do matches “list building services”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names list building services), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among list building services, and records with no verified work email. Companies headquartered outside United Kingdom are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 5,315 across the full list. 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 August 29, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names list building services, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many list building services are there based in the United Kingdom?
RevenueBase identified 3,609 list building services headquartered in the United Kingdom as of August 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
FES Group, headquartered in Aberdeen, tops this list with the largest team on record.
Which city has the most list building services?
London leads with 737 headquartered companies, followed by Manchester (64) and Birmingham (41).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 5,315 verified decision-maker contacts tracked across these 3,609 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 29, 2026.
Ready to reach these companies? Verified emails and direct dials for all 3,609 list building services based in the United Kingdom. Start with a free account, no credit card.
Download this list →Related lists
List building services by geography
- List building services based in the United States
- List building services based in Brazil
- List building services based in France
- List building services based in Germany
- List building services based in Canada
- List building services based in Spain
- List building services based in Italy
- List building services based in the Netherlands
- List building services based in Australia
- List building services based in Switzerland
- List building services based in Mexico
- List building services based in Sweden
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 Smart Search, 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
- List building services based in the United States
- List building services based in Brazil
- List building services based in France
- List building services based in Germany
- List building services based in Canada
- List building services based in Spain