Company lists · Data verified August 2026

Top 25 Enterprise software modernization companies based in the United Kingdom

Name: Enterprise software modernization companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 309 companies tracked

There are 309 enterprise software modernization companies headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 84,641 professional contacts across them, including 22,964 with verified work emails and 7,912 with mobile numbers. London is the largest hub.

This list covers enterprise software modernization companies 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.

309Companies

84,641Contacts tracked

22,964Verified emails

7,912Mobile numbers

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The 25 largest enterprise software modernization companies based in the United Kingdom

Ranked by team size

Top 25 of 309 enterprise software modernization companies 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.
#	Company	HQ	Employees	Contacts	Verified emails
1	Mphasis	London	10001+	43,740	6,968
2	Persistent Systems	Chertsey	10001+	27,186	10,549
3	Andersen LAB	London	1,001-5,000	3,609	1,152
4	Ensono	Staines-Upon-Thames	1,001-5,000	3,246	1,963
5	BBD	London	1,001-5,000	1,220	485
6	Indus NET Technologies INT	London	501-1,000	1,065	259
7	Node4	London	1,001-5,000	624	480
8	Biztech Consulting & Solutions	Ruislip Ruislip	201-500	317	10
9	Redpanda Software	London	51-200	191	1
10	Qbrainx INC	London	201-500	181	17
11	Codurance	London	201-500	171	74
12	Quadwave Consulting PVT LTD	London	51-200	137	10
13	Mechanical Orchard	n/a	51-200	115	59
14	Decode	London	51-200	97	63
15	Merixstudio	Bristol	51-200	84	69
16	BIT Wave Solutions Limited	Reading	11-50	75	2
17	unipro.io	Havant	51-200	73	26
18	Linksoft Technologies	Islington	51-200	70	23
19	Practicevantage Consulting	London	51-200	64	24
20	Wavex Technology LTD	n/a	51-200	60	25
21	Codification	Newcastle Upon Tyne	51-200	60	22
22	Vertali	England	11-50	55	34
23	Diegesis Limited	London	51-200	53	33
24	Elitex	Edinburgh	51-200	51	23
25	Cloudhouse	London	51-200	50	33

Showing 25 of 309 enterprise software modernization companies based in the United Kingdom

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Enterprise software modernization companies based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 122 HQs

7,912Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

159

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Enterprise software modernization companies by metro

Metro	Companies
Enterprise software modernization companies in London	122
Enterprise software modernization companies in Manchester	8
Enterprise software modernization companies in Reading	8
Enterprise software modernization companies in Birmingham	7
Enterprise software modernization companies in Leeds	6
Enterprise software modernization companies in Bristol	4
Enterprise software modernization companies in Glasgow	4

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 “enterprise software modernization companies”, 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; 0 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 enterprise software modernization companies are there based in the United Kingdom?

There are 309 enterprise software modernization companies headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

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

Which city has the most enterprise software modernization companies?

London leads with 122 headquartered companies, followed by Manchester (8) and Reading (8).

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 22,964 verified decision-maker contacts tracked across these 309 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.