Company lists · Data refreshed September 2026

Top 25 Api and CRM integration companies based in the United Kingdom

Name: Api and CRM integration companies based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 258 companies tracked

RevenueBase identified 258 api and CRM integration companies headquartered in the United Kingdom as of September 2026 and tracks 1,905 professional contacts across them, including 626 with verified work emails. London is the largest hub.

This list covers api and CRM integration 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. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review

258Companies

1,905Contacts tracked

626Verified emails

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The 25 largest api and CRM integration companies based in the United Kingdom

Ranked by team size

Top 25 of 258 api and CRM integration companies based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to api and CRM integration companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Acteol	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	85 contacts →
	Partial evidence “We're an award-winning CRM agency who specialise in knitting together complex and disparate data to create a powerful single customer view that can deliver significant returns to…” Source: RevenueBase Database · checked Sep 27, 2026
2	REDK	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	78 contacts →
	Partial evidence “redk is a CRM consulting company with a difference.” Source: RevenueBase Database · checked Sep 27, 2026
3	Workbooks CRM	Partial evidence	Reading, United KingdomHQ checked Sep 27, 2026	51-200	64 contacts →
	Partial evidence “Workbooks is a CRM SaaS platform used by growing companies to run their business and engage effectively with their customers.” Source: RevenueBase Database · checked Sep 27, 2026
4	Optimiser	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	57 contacts →
	Indirect evidence “Optimiser is a fully configurable business intelligence ecosystem that helps organisations manage relationships, operations, workflows, communications, and commercial activities…” Source: RevenueBase Database · checked Sep 27, 2026
5	Warrgyizmorsch	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	51 contacts →
	Partial evidence “Tailored ERP, CRM & SaaS that automates your operations and fuels measurable growth.” Source: RevenueBase Database · checked Sep 27, 2026
6	Armadillo	Partial evidence	Bristol, United KingdomHQ checked Sep 27, 2026	51-200	48 contacts →
	Partial evidence “We are Armadillo - A Bond Company, a multi-award winning CRM agency.” Source: RevenueBase Database · checked Sep 27, 2026
7	Imobisoft	Indirect evidence	Coventry, United KingdomHQ checked Sep 27, 2026	11-50	39 contacts →
	Indirect evidence “Imobisoft is a full-service bespoke software and automation solutions provider.” Source: RevenueBase Database · checked Sep 27, 2026
8	3li Global	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	51-200	36 contacts →
	Partial evidence “Most businesses don't have a CRM problem.” Source: RevenueBase Database · checked Sep 27, 2026
9	Dynamica Labs	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	32 contacts →
	Partial evidence “Dynamica Labs is one of the oldest Dynamics CRM Partners and one of a very few companies with ISO 9001 Quality Management System certification for Dynamics CRM project delivery…” Source: RevenueBase Database · checked Sep 27, 2026
10	WEB Alliance Limited	Indirect evidence	Northampton, United KingdomHQ checked Sep 27, 2026	11-50	30 contacts →
	Indirect evidence “Are you still using Cumbersome Excel Spreadsheets to manually track your leads, customers and invoices?” Source: RevenueBase Database · checked Sep 27, 2026
11	Concep	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	28 contacts →
	Indirect evidence “We live and breathe relationship marketing.” Source: RevenueBase Database · checked Sep 27, 2026
12	Turbosoft Limited	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	26 contacts →
	Partial evidence “We connect your CRM, ERP, AI and Cloud systems, bridging internal platforms and external tools so your data flows cleanly, your processes run automatically, and your business…” Source: RevenueBase Database · checked Sep 27, 2026
13	Gold-Vision CRM	Partial evidence	Northampton, United KingdomHQ checked Sep 27, 2026	11-50	25 contacts →
	Partial evidence “Gold-Vision CRM is a highly configurable, user-friendly customer relationship management (CRM) platform designed to unify and streamline sales and marketing processes for…” Source: RevenueBase Database · checked Sep 27, 2026
14	Spotdev	Partial evidence	Bath, United KingdomHQ checked Sep 27, 2026	11-50	25 contacts →
	Partial evidence “When you don't trust your CRM, your systems don't talk to each other, and your reports are nonsense, it's time to call SpotDev.” Source: RevenueBase Database · checked Sep 27, 2026
15	Prospect CRM	Partial evidence	Loughborough, United KingdomHQ checked Sep 27, 2026	51-200	23 contacts →
	Partial evidence “ProspectSoft is part of the ERP division at The Access Group, specialising in CRM & eCommerce.” Source: RevenueBase Database · checked Sep 27, 2026
16	Ignyto The Leading Platinum Salesforce Partner Across Emea	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	22 contacts →
	Partial evidence “Summit / Platinum Level Salesforce Consultants, Integration & Implementation Specialists in Dublin, Manchester, London and Stockholm.” Source: RevenueBase Database · checked Sep 27, 2026
17	Ascendx	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	1-10	22 contacts →
	Partial evidence “An enterprise cloud software company that helps teams solve their problems by boosting productivity and transforming tech stacks on CRM platforms such as Salesforce, Dynamics 365…” Source: RevenueBase Database · checked Sep 27, 2026
18	Flowbird LTD	Partial evidence	Ashford, United KingdomHQ checked Sep 27, 2026	11-50	19 contacts →
	Partial evidence “We are a CRM and automation agency that keeps things simple.” Source: RevenueBase Database · checked Sep 27, 2026
19	Fastdox	Indirect evidence	Manchester, United KingdomHQ checked Sep 27, 2026	51-200	18 contacts →
	Indirect evidence “FastDox is a pioneering software solutions company specialising in tailor-made, branded software for global businesses.” Source: RevenueBase Database · checked Sep 27, 2026
20	Avrion	Indirect evidence	Stevenage, United KingdomHQ checked Sep 27, 2026	11-50	16 contacts →
	Indirect evidence “We deliver software solutions that help our customers work smarter using technologies to streamline operations, improve performance, and gain long-term scalable growth.” Source: RevenueBase Database · checked Sep 27, 2026
21	Cergis Software	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	16 contacts →
	Indirect evidence “Our philosophy of 'Beautiful Technology' is about creating systems that work invisibly, silently and effectively.” Source: RevenueBase Database · checked Sep 27, 2026
22	Wedocrm	Strong evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	15 contacts →
	Strong evidence “WeDoCRM is a leading CRM agency, specialising in CRM and MarTech integrations and operations, as well as multi-channel marketing support.” Source: RevenueBase Database · checked Sep 27, 2026
23	Robosme	Partial evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	15 contacts →
	Partial evidence “Robosme - CRM to Win Easy to use cloud CRM that automates your business and benefits every process you touch the customer.” Source: RevenueBase Database · checked Sep 27, 2026
24	Repath Solutions	Indirect evidence	West End, United KingdomHQ checked Sep 27, 2026	11-50	15 contacts →
	Indirect evidence “Repath is a Premium Zoho Partner with over 300 projects in over 16 countries.” Source: RevenueBase Database · checked Sep 27, 2026
25	Westbrook International LTD	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	11-50	15 contacts →
	Indirect evidence “Unlocking Salesforce Innovation through Partnership.” Source: RevenueBase Database · checked Sep 27, 2026

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: api and CRM integration 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 api and CRM integration companies.
Partial evidence: Its own public description names part of api and CRM integration companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name api and CRM integration 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 258 api and CRM integration companies based in the United Kingdom

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Api and CRM integration companies based in the United Kingdom at a glance

As of Sep 27, 2026

32.9%Verified-email coverage

7.4Average contacts per company

1-10Median size (employees)

33.3%Largest-city concentration · London

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

162

11-50

51-200

201-500

Email recency for this list is measured worldwide rather than for United Kingdom, so it is reported there. Company counts and contact totals on this page are exact for United Kingdom, over 258 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 api and CRM integration 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 the United Kingdom whose own description of what they do matches “api and CRM integration 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 api and CRM integration 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 api and CRM integration companies, and records with no verified work email. Companies headquartered outside United Kingdom 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, 626 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 27, 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.

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 api and CRM integration 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 api and CRM integration companies are there based in the United Kingdom?

RevenueBase identified 258 api and CRM integration companies headquartered in the 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?

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

Which city has the most api and CRM integration companies?

London leads with 86 headquartered companies, followed by Manchester (12) 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 626 verified decision-maker contacts tracked across these 258 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 27, 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.