Company lists · Data verified August 2026

Top 25 Cloud infrastructure builders based in the United Kingdom

There are 401 cloud infrastructure builders headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 21,000 professional contacts across them, including 3,817 with verified work emails and 953 with mobile numbers. London is the largest hub.

This list covers cloud infrastructure builders headquartered in the United Kingdom, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

401Companies
21,000Contacts tracked
3,817Verified emails
953Mobile numbers
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The 25 largest cloud infrastructure builders based in the United Kingdom

Ranked by team size
Top 25 of 401 cloud infrastructure builders based in the United Kingdom, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#CompanyHQEmployeesContactsVerified emails
1OvhcloudLondon1,001-5,0003,0393
2Sada, An Insight CompanyPoole10001+872139
3Bytes Software ServicesPortsmouth501-1,000784523
4SourcefuseLondon501-1,000669288
5Ahana Systems And Solutions Pvt. LTDLondon501-1,000645183
6IomartGlasgow201-500422200
7ZenzeroCoventry501-1,000403281
8KOCHOLondon201-500299189
9BUIDerby51-20025019
10Proact IT Group ABLeeds1,001-5,00022479
11VohkusFareham51-200189119
12Creative ITCLondon201-50017599
13CSI LTD A CSI Group CompanyLondon201-500161116
14Maxima ConsultingTenterden201-50014615
15Block SolutionsCrewe51-200140100
16DTP GroupLeeds51-20012931
17ZUREYork51-200121102
18Beeks GroupGlasgow51-20011984
19RDXLondon501-1,0001109
20Adapt A Datapipe CompanyLondon201-500984
21ChorusBristol51-2009243
22CTMLondon51-2008311
23ORMLondon51-2008210
24BrightsolidDundee51-2007750
25CIVOLondon51-2007538

Showing 25 of 401 cloud infrastructure builders based in the United Kingdom

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Cloud infrastructure builders based in the United Kingdom at a glance

As of Aug 28, 2026
1-10Median size (employees)
LondonLargest hub · 162 HQs
953Contacts with mobile numbers
17Emails re-verified in last 30 days

Companies by employee count

1-10
201
11-50
116
51-200
52
201-500
12
501-1,000
8
1,001-5,000
7
10001+
1

Cloud infrastructure builders by metro

MetroCompanies
Cloud infrastructure builders in London162
Cloud infrastructure builders in Manchester14
Cloud infrastructure builders in Leeds6
Cloud infrastructure builders in Reading6
Cloud infrastructure builders in Basingstoke5
Cloud infrastructure builders in Milton Keynes4
Cloud infrastructure builders in Bristol4

How this list was built

Source
The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion
Companies whose own business descriptions match “cloud infrastructure builders”, with match quality audited by blind human judging, and headquartered in the United Kingdom.
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
Contact records re-verify on a rolling cadence; 17 contacts on this list were re-verified in the last 30 days.
Refresh
Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many cloud infrastructure builders are there based in the United Kingdom?

There are 401 cloud infrastructure builders headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

Ovhcloud, headquartered in London, tops this list with the largest team on record.

Which city has the most cloud infrastructure builders?

London leads with 162 headquartered companies, followed by Manchester (14) and Leeds (6).

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 3,817 verified decision-maker contacts tracked across these 401 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.