Company lists · Data refreshed September 2026
Top 25 Consultancy companies based in Cardiff, United Kingdom
RevenueBase identified 85 consultancy companies headquartered in Cardiff, United Kingdom as of September 2026 and tracks 878 professional contacts across them, including 409 with verified work emails. London is the largest hub.
This list covers consultancy companies headquartered in Cardiff, 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 September 24, 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 consultancy companies based in Cardiff, United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 236 contacts → | ||||
Indirect evidence “Capital Law is a commercial law firm.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 2 | 79 contacts → | ||||
Strong evidence “At Burroughs, we believe our success as an engineering and project management consultancy stems from our core values of Quality, Integrity, and Experience.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 3 | 63 contacts → | ||||
Strong evidence “By providing a comprehensive range of advisory, design, cost consultancy, project management, civil and structural engineering services, we enable you to get your construction…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 4 | 15 contacts → | ||||
Strong evidence “Lee Wakemans is a professional construction consultancy providing development management, project management, cost management and principal designer services.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 5 | 11 contacts → | ||||
Strong evidence “Barford Owen Davies is a specialist financial consultancy team based in Wales.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 6 | 8 contacts → | ||||
Strong evidence “The Austin Partnership based in Cardiff was established in 1991 and provides a comprehensive range of independent consultancy services for a broad expanding client portfolio…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 7 | 8 contacts → | ||||
Indirect evidence “Be TC: When you’re choosing a Quantity Surveyor, Project Manager or Employer’s Agent, technical competence is a given.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 8 | 8 contacts → | ||||
Indirect evidence “PROMOTING INDEPENDENCE LTD (OT Services) OFFER: 1.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 9 | 6 contacts → | ||||
Strong evidence “Spirit Public Sector is a technology consultancy firm working exclusively for public sector organisations, to help them to drive value for the public purse, particularly in the…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 10 | 5 contacts → | ||||
Indirect evidence “Provider of freelance programme, project, portfolio, product and PMO management consulting services to end clients, through an on-demand services framework.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 11 | 5 contacts → | ||||
Strong evidence “Independent Cost Consultants offering traditional QS services delivered to a high standard and exceeding client expectations.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 12 | 5 contacts → | ||||
Strong evidence “MSA Mining Consulting UK Ltd is part of the larger MSA Group, an independent technical consultancy providing high quality geology, exploration, mineral resource, mining and…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 13 | 5 contacts → | ||||
Indirect evidence “RedCortex are leading Cloud Transformation, Architecture and Programme Management experts.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 14 | 4 contacts → | ||||
Strong evidence “Capital People is a commercial consultancy business.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 15 | 4 contacts → | ||||
Indirect evidence “Introducing Vitec Webber Lenihan Ltd.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 16 | 3 contacts → | ||||
Indirect evidence “Transform Contracts into a Growth Opportunity with The Commercial Toolkit Managing contracts doesn’t have to be overwhelming.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 17 | 3 contacts → | ||||
Indirect evidence “Williams Management Consulting was founded to change the way the industry approaches recruitment.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 18 | 3 contacts → | ||||
Indirect evidence “People are at the heart of every business.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 19 | 2 contacts → | ||||
Indirect evidence “Terrafirma enables our customers to develop quick, agile, and innovative processes that have helped them lower costs, reduce risk, achieve objectives, expand operations, and…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 20 | 2 contacts → | ||||
Indirect evidence “I’m Sherona and I talk about business operational discipline, excellence, planning, accountability, and execution among other things… Whether you’re looking to streamline, grow…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 21 | 2 contacts → | ||||
Indirect evidence “EDWARDS HART LIMITED is a management consulting company based in Cardiff” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 22 | 2 contacts → | ||||
Indirect evidence “SQE was formed to ensure client compliance with safety, quality, environmental and employment legislation.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 23 | 2 contacts → | ||||
Indirect evidence “Long term consultative relationship working to reduce your business costs across: Energy Water Merchant services Business rates Business insurance Waste management Finance or…” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1 contacts → | ||||
Indirect evidence “In response to "traditional" consulting that talks a lot and delivers little.” Source: RevenueBase Database · checked Sep 24, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 contacts → | ||||
Indirect evidence “Keeping true to the principle of Kaizen, Prosona brings together a team of accomplished leaders from their respective domains that allows us to deliver not only bespoke services…” Source: RevenueBase Database · checked Sep 24, 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: consultancy companies. 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 consultancy companies.
- Partial evidence
- Its own public description names part of consultancy companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name consultancy companies. 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 85 consultancy companies based in Cardiff, United Kingdom
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Consultancy companies based in Cardiff, United Kingdom at a glance
As of Sep 24, 2026Companies by employee count
Email recency for this list is measured across the whole United Kingdom list rather than for Cardiff, so it is reported there. Company counts and contact totals on this page are exact for Cardiff, over 85 companies.
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 consultancy companies, 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 Cardiff, United Kingdom whose own description of what they do matches “consultancy companies”. 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 consultancy companies), 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 consultancy companies, and records with no verified work email. Companies headquartered outside Cardiff 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, 409 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 September 24, 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.
Consultancy companies by metro in the United Kingdom
- Consultancy companies in London6437
- Consultancy companies in Manchester502
- Consultancy companies in Bristol278
- Consultancy companies in Birmingham265
- Consultancy companies in Edinburgh245
- Consultancy companies in Glasgow235
- Consultancy companies in Leeds233
- Consultancy companies in Cambridge147
- Consultancy companies in Nottingham140
- Consultancy companies in Sheffield130
- Consultancy companies in Reading122
- Consultancy companies in Liverpool121
- Consultancy companies in Derby101
- Consultancy companies in Belfast99
- Consultancy companies in Brighton99
- Consultancy companies in Oxford96
- Consultancy companies in Southampton96
- Consultancy companies in Aberdeen89
- Consultancy companies in Cardiff85
- Consultancy companies in Norwich84
- Consultancy companies in Milton Keynes82
- Consultancy companies in Leicester77
- Consultancy companies in Northampton77
- Consultancy companies in Newcastle Upon Tyne75
- Consultancy companies in Coventry72
- Consultancy companies in York72
- Consultancy companies in Guildford69
- Consultancy companies in Exeter64
- Consultancy companies in Cheltenham61
- Consultancy companies in Bath60
- Consultancy companies in Swindon57
- Consultancy companies in Bournemouth56
- Consultancy companies in Peterborough56
- Consultancy companies in Warrington55
- Consultancy companies in Winchester55
- Consultancy companies in Chester52
- Consultancy companies in Preston52
- Consultancy companies in Chelmsford50
- Consultancy companies in St Albans50
- Consultancy companies in Harrogate46
- Consultancy companies in Solihull46
- Consultancy companies in Huddersfield44
- Consultancy companies in Watford44
- Consultancy companies in Poole43
- Consultancy companies in Bedford42
- Consultancy companies in Ipswich40
- Consultancy companies in Lincoln39
- Consultancy companies in Tunbridge Wells38
- Consultancy companies in Basingstoke37
- Consultancy companies in Horsham37
- Consultancy companies in Shrewsbury37
- Consultancy companies in Portsmouth36
- Consultancy companies in London London35
- Consultancy companies in Maidenhead35
- Consultancy companies in Hove34
- Consultancy companies in Newbury34
- Consultancy companies in Colchester33
- Consultancy companies in Stockport33
- Consultancy companies in Worcester33
- Consultancy companies in Uk32
- Consultancy companies in Gloucester31
- Consultancy companies in Maidstone31
- Consultancy companies in Canterbury29
- Consultancy companies in Croydon29
- Consultancy companies in Doncaster29
- Consultancy companies in Salisbury29
- Consultancy companies in Swansea29
- Consultancy companies in Worthing29
- Consultancy companies in Bradford28
- Consultancy companies in Ilford28
- Consultancy companies in Plymouth28
- Consultancy companies in Wolverhampton28
- Consultancy companies in Farnham27
- Consultancy companies in Wakefield27
- Consultancy companies in Ashford26
- Consultancy companies in Chichester26
- Consultancy companies in Durham26
- Consultancy companies in Harrow26
- Consultancy companies in Hemel Hempstead26
- Consultancy companies in Slough26
- Consultancy companies in Hull25
- Consultancy companies in Leamington Spa25
- Consultancy companies in Luton25
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 consultancy companies, 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 consultancy companies are there based in Cardiff, United Kingdom?
RevenueBase identified 85 consultancy companies headquartered in Cardiff, United Kingdom as of September 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?
Capital LAW LTD, headquartered in Cardiff, tops this list with the largest team on record.
Which city has the most consultancy companies?
London leads with 6437 headquartered companies, followed by Manchester (502) and Bristol (278).
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 409 verified decision-maker contacts tracked across these 85 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 24, 2026.
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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.
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