Company lists · Data refreshed September 2026
Top 25 IT consultancies based in Southampton, United Kingdom
RevenueBase identified 89 IT consultancies headquartered in Southampton, United Kingdom as of September 2026 and tracks 325 professional contacts across them, including 90 with verified work emails. London is the largest hub.
This list covers IT consultancies headquartered in Southampton, 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 26, 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 IT consultancies based in Southampton, United Kingdom
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 37 contacts → | ||||
Indirect evidence “ITDev is a software and electronic engineering consultancy with a track record of outstanding quality and customer service spanning 20 years.” Source: RevenueBase Database · checked Sep 26, 2026Thanks. The Data Team will review it. | |||||
| 2 | 8 contacts → | ||||
Indirect evidence “We partner with forward-thinking change makers, committed to making an impact, and deliver effective marketing, communications, and technology programmes that yield results.” Source: RevenueBase Database · checked Sep 26, 2026Thanks. The Data Team will review it. | |||||
| 3 | 8 contacts → | ||||
Indirect evidence “Source & Connect are an expert recruitment consultancy specialising in ERP & CRM, across the full Microsoft Dynamics 365 suite & Power Platform.” Source: RevenueBase Database · checked Sep 26, 2026Thanks. The Data Team will review it. | |||||
| 4 | 7 contacts → | ||||
Indirect evidence “Delivering excellence in everything people.” Source: RevenueBase Database · checked Sep 26, 2026Thanks. The Data Team will review it. | |||||
| 5 | 7 contacts → | ||||
Indirect evidence “A digital consultancy helping businesses thrive online through creative marketing support, creative direction and consultancy.” Source: RevenueBase Database · checked Sep 26, 2026Thanks. The Data Team will review it. | |||||
| 6 | 6 contacts → | ||||
Indirect evidence “At Netshell, we help businesses move beyond outdated systems and manual processes by implementing intelligent, future‑ready tools and strategies.” Source: RevenueBase Database · checked Sep 26, 2026Thanks. The Data Team will review it. | |||||
| 7 | 6 contacts → | ||||
Indirect evidence “At Colva tech we focus our offering around the needs of SMEs and tailor our recommendations accordingly taking into account current needs and future aspirations.” Source: RevenueBase Database · checked Sep 26, 2026Thanks. The Data Team will review it. | |||||
| 8 | 4 contacts → | ||||
Indirect evidence “As a Technology Leader, you understand the importance of agility and innovation in today's rapidly evolving digital landscape.” Source: RevenueBase Database · checked Sep 26, 2026Thanks. The Data Team will review it. | |||||
| 9 | 4 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 26, 2026Thanks. The Data Team will review it. | |||||
| 10 | 3 contacts → | ||||
Indirect evidence “Barclay Hamp represents trustworthy expertise within agricultural inputs, the most important sector on our planet.” Source: RevenueBase Database · checked Sep 26, 2026Thanks. The Data Team will review it. | |||||
| 11 | 3 contacts → | ||||
Partial evidence “Finance & Accountancy • Accountancy services pro, systems design & implementation together with the IT & related MIS sys & processes.” Source: RevenueBase Database · checked Sep 26, 2026Thanks. The Data Team will review it. | |||||
| 12 | 2 contacts → | ||||
Partial evidence “Inside Technology work with small businesses to ensure they are getting the most out of their IT Systems.” Source: RevenueBase Database · checked Sep 26, 2026Thanks. The Data Team will review it. | |||||
| 13 | 2 contacts → | ||||
Indirect evidence “Perfect Concept is a specialised consultancy firm dedicated to fostering the growth of businesses in the UK and around the world through strategic planning across a variety of…” Source: RevenueBase Database · checked Sep 26, 2026Thanks. The Data Team will review it. | |||||
| 14 | 2 contacts → | ||||
Indirect evidence “We are Labvolution.” Source: RevenueBase Database · checked Sep 26, 2026Thanks. The Data Team will review it. | |||||
| 15 | 2 contacts → | ||||
Indirect evidence “At LS Consulting & Finance, Lisa is passionate about empowering SME business leaders to achieve their strategic goals.” Source: RevenueBase Database · checked Sep 26, 2026Thanks. The Data Team will review it. | |||||
| 16 | 2 contacts → | ||||
Indirect evidence “MDC Advisory is a business psychology and leadership consultancy with expertise across psychometric assessment, leadership assessment & executive coaching and organisational…” Source: RevenueBase Database · checked Sep 26, 2026Thanks. The Data Team will review it. | |||||
| 17 | 2 contacts → | ||||
Indirect evidence “Partnering with awesome recruitment SMEs, focusing on all things "people" to help the business flourish and people to thrive.” Source: RevenueBase Database · checked Sep 26, 2026Thanks. The Data Team will review it. | |||||
| 18 | 1 contacts → | ||||
Indirect evidence “SWITCHNET SERVICES LIMITED is an information technology and services company based out of Bursledon Road, Southampton, England, United Kingdom.” Source: RevenueBase Database · checked Sep 26, 2026Thanks. The Data Team will review it. | |||||
| 19 | 1 contacts → | ||||
Indirect evidence “EXPIRIC LTD is a Management, Service & Technology consulting company based out of SOUTHAMPTON, United Kingdom.” Source: RevenueBase Database · checked Sep 26, 2026Thanks. The Data Team will review it. | |||||
| 20 | 1 contacts → | ||||
Indirect evidence “Bringing clarity and control back into the business of production where client and agency can work in harmony!” Source: RevenueBase Database · checked Sep 26, 2026Thanks. The Data Team will review it. | |||||
| 21 | 1 contacts → | ||||
Indirect evidence “Maru Search is a leading UK-wide recruitment consultancy specialising in helping businesses attract, hire, and retain top talent.” Source: RevenueBase Database · checked Sep 26, 2026Thanks. The Data Team will review it. | |||||
| 22 | 1 contacts → | ||||
Indirect evidence “HR Consultancy Services providng bespoke people managment solutions through a business partnering approach to ensure your business achieves maximum productivity and profitability” Source: RevenueBase Database · checked Sep 26, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1 contacts → | ||||
Indirect evidence “We are not your typical HR consultants with serious faces and stuffy suits Picture us as your HR sidekicks and your partners-in-crime (figuratively, of course), tackling your…” Source: RevenueBase Database · checked Sep 26, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1 contacts → | ||||
Indirect evidence “Multiply provides agencies and businesses with straightforward strategy.” Source: RevenueBase Database · checked Sep 26, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 contacts → | ||||
Indirect evidence “Ozboz exists for one reason: to help SMEs and start-ups build better businesses.” Source: RevenueBase Database · checked Sep 26, 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: IT consultancies. 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 IT consultancies.
- Partial evidence
- Its own public description names part of IT consultancies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name IT consultancies. 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 89 IT consultancies based in Southampton, United Kingdom
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IT consultancies based in Southampton, United Kingdom at a glance
As of Sep 26, 2026Companies by employee count
Email recency for this list is measured across the whole United Kingdom list rather than for Southampton, so it is reported there. Company counts and contact totals on this page are exact for Southampton, over 89 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 IT consultancies, 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 Southampton, United Kingdom whose own description of what they do matches “IT consultancies”. 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 IT consultancies), 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 IT consultancies, and records with no verified work email. Companies headquartered outside Southampton 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, 90 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 26, 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.
IT consultancies by metro in the United Kingdom
- IT consultancies in London6364
- IT consultancies in Manchester438
- IT consultancies in Birmingham264
- IT consultancies in Bristol236
- IT consultancies in Leeds219
- IT consultancies in Glasgow176
- IT consultancies in Edinburgh175
- IT consultancies in Reading166
- IT consultancies in Cambridge132
- IT consultancies in Milton Keynes113
- IT consultancies in Sheffield112
- IT consultancies in Nottingham100
- IT consultancies in Oxford100
- IT consultancies in Liverpool95
- IT consultancies in Southampton89
- IT consultancies in Coventry84
- IT consultancies in Leicester76
- IT consultancies in Cardiff74
- IT consultancies in Brighton73
- IT consultancies in Derby73
- IT consultancies in Newcastle Upon Tyne70
- IT consultancies in Northampton67
- IT consultancies in Aberdeen65
- IT consultancies in York62
- IT consultancies in Swindon59
- IT consultancies in Guildford56
- IT consultancies in Belfast55
- IT consultancies in Bournemouth52
- IT consultancies in Cheltenham51
- IT consultancies in Norwich50
- IT consultancies in Chester49
- IT consultancies in Peterborough49
- IT consultancies in Poole49
- IT consultancies in Harrogate47
- IT consultancies in Harrow46
- IT consultancies in Bath45
- IT consultancies in Maidenhead45
- IT consultancies in Solihull45
- IT consultancies in Warrington45
- IT consultancies in Watford45
- IT consultancies in Winchester45
- IT consultancies in Chelmsford40
- IT consultancies in St Albans40
- IT consultancies in Basingstoke39
- IT consultancies in Hove39
- IT consultancies in Slough39
- IT consultancies in Exeter38
- IT consultancies in Ilford35
- IT consultancies in Ipswich35
- IT consultancies in Luton35
- IT consultancies in Preston35
- IT consultancies in London London34
- IT consultancies in Woking34
- IT consultancies in Bedford33
- IT consultancies in Tunbridge Wells33
- IT consultancies in Worcester33
- IT consultancies in Huddersfield32
- IT consultancies in Doncaster31
- IT consultancies in Hemel Hempstead31
- IT consultancies in Horsham30
- IT consultancies in Maidstone30
- IT consultancies in Portsmouth30
- IT consultancies in Aylesbury28
- IT consultancies in Bracknell28
- IT consultancies in High Wycombe28
- IT consultancies in Durham27
- IT consultancies in Leamington Spa27
- IT consultancies in Uk27
- IT consultancies in Camberley26
- IT consultancies in Lincoln26
- IT consultancies in Newbury26
- IT consultancies in Stockport26
- IT consultancies in Bradford25
- IT consultancies in Colchester25
- IT consultancies in Shrewsbury25
- IT consultancies in Worthing25
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 IT consultancies, 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 IT consultancies are there based in Southampton, United Kingdom?
RevenueBase identified 89 IT consultancies headquartered in Southampton, 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?
ITDEV, headquartered in Southampton, tops this list with the largest team on record.
Which city has the most IT consultancies?
London leads with 6364 headquartered companies, followed by Manchester (438) and Birmingham (264).
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 90 verified decision-maker contacts tracked across these 89 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 26, 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.