Company lists · Data verified August 2026

Top 25 CRM customization developers based in the United Kingdom

Name: CRM customization developers 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 245 companies tracked

There are 245 CRM customization developers headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 1,591 professional contacts across them, including 534 with verified work emails and 97 with mobile numbers. London is the largest hub.

This list covers CRM customization developers 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.

245Companies

1,591Contacts tracked

534Verified emails

97Mobile numbers

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The 25 largest CRM customization developers based in the United Kingdom

Ranked by team size

Top 25 of 245 CRM customization developers 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	Cloudcentric Infotech INC	London	51-200	111	76
2	Flourish CRM	n/a	51-200	70	20
3	Workbooks CRM	Reading	51-200	63	44
4	Amdrodd Technologies INC	Basingstoke	51-200	63	26
5	Capsule	Manchester	11-50	56	30
6	Optimiser	London	51-200	56	10
7	Armadillo	Bristol	51-200	48	24
8	Dynamica Labs	London	11-50	32	15
9	Performa	Stonehouse	51-200	29	13
10	WEB Alliance Limited	Northampton	11-50	28	2
11	Spotdev	Bath	11-50	24	15
12	Aulysius	London	11-50	24	7
13	4xportal	London	11-50	24	3
14	Collier Pickard LTD	Sundridge	11-50	22	14
15	Flowbird LTD	Ashford	11-50	21	12
16	Trigg Digital	City Of London	11-50	19	9
17	makedigital.co.uk	Chelmsford	11-50	18	8
18	Preact	Manchester	51-200	18	7
19	Zumzum	Stockport	11-50	18	6
20	Wedocrm	n/a	11-50	16	12
21	Akarigo	London	11-50	13	7
22	Opencrm	Richmond	11-50	12	8
23	Signals LTD	Henlow	11-50	11	5
24	Brightoffice	Preston	11-50	11	2
25	Buddycrm	Walsall	11-50	9	5

Showing 25 of 245 CRM customization developers based in the United Kingdom

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CRM customization developers based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 79 HQs

97Contacts with mobile numbers

1Emails re-verified in last 30 days

Companies by employee count

1-10

167

11-50

51-200

201-500

CRM customization developers by metro

Metro	Companies
CRM customization developers in London	79
CRM customization developers in Manchester	8
CRM customization developers in Reading	5
CRM customization developers in Leeds	4
CRM customization developers in Birmingham	3
CRM customization developers in Southampton	3
CRM customization developers in Bournemouth	2

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 “CRM customization developers”, 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; 1 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 CRM customization developers are there based in the United Kingdom?

There are 245 CRM customization developers headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

Cloudcentric Infotech INC, headquartered in London, tops this list with the largest team on record.

Which city has the most CRM customization developers?

London leads with 79 headquartered companies, followed by Manchester (8) and Reading (5).

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 534 verified decision-maker contacts tracked across these 245 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.