Company lists · Data refreshed September 2026

Top 25 Customer success consulting firms based in the United Kingdom

Name: Customer success consulting firms based in the United Kingdom
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 1,286 companies tracked

RevenueBase identified 1,286 customer success consulting firms headquartered in the United Kingdom as of September 2026 and tracks 6,410 professional contacts across them, including 1,680 with verified work emails and 502 with mobile numbers. London is the largest hub.

This list covers customer success consulting firms 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review

1,286Companies

6,410Contacts tracked

1,680Verified emails

502Mobile numbers

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The 25 largest customer success consulting firms based in the United Kingdom

Ranked by team size

Top 25 of 1,286 customer success consulting firms based in the United Kingdom, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names customer success consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Vertex Data SciencePartial evidence	London, United Kingdom	51-200	570
	“Vertex is a leader in BPO and Customer Management Outsourcing, serving over 200 clients worldwide across many sectors.” Source: company website · checked Sep 3, 2026
2	ArvatoconnectPartial evidence	Newcastle Upon Tyne, United Kingdom	501-1,000	538
	“Your world is changing at lightning speed; new business models, new technologies, new competitors, and new customers.” Source: company website · checked Sep 3, 2026
3	Ethos FarmPartial evidence	New York, United Kingdom	1,001-5,000	264
	“Award-winning Customer Experience and Employee Experience consultancy with offices in London and New York.” Source: company website · checked Sep 3, 2026
4	EDITIndirect evidence	Bath, United Kingdom	51-200	224
	“Edit are future-focused data and technology experts.” Source: company website · checked Sep 3, 2026
5	MantecPartial evidence	London, United Kingdom	51-200	85
	“Mantec, a member of Andersen Consulting, is a management consultancy with offices in Gothenburg, Stockholm, Oslo, Copenhagen, Helsinki and London.” Source: company website · checked Sep 3, 2026
6	Growth HUBIndirect evidence	London, United Kingdom	51-200	84
	“At Growth Hub, we help organisations streamline processes, harness data effectively, and make informed decisions.” Source: company website · checked Sep 3, 2026
7	TAP CXMPartial evidence	London, United Kingdom	51-200	76
	“At Tap CXM, we believe businesses do best when they focus on customer experience.” Source: company website · checked Sep 3, 2026
8	PENPartial evidence	London, United Kingdom	51-200	75
	“We’re a specialist, management consultancy, focusing on; Customer Experience, Operational Excellence and Change Delivery, dedicated to helping our clients create real, positive…” Source: company website · checked Sep 3, 2026
9	Cloud OrcaPartial evidence	London, United Kingdom	51-200	74
	“Part of Cooper Parry, Cloud Orca are a award winning London based Salesforce CRM consultancy focused on delivering effective, profitable and successful implementations and support…” Source: company website · checked Sep 3, 2026
10	Excalibur CommunicationsPartial evidence	Swindon, United Kingdom	51-200	72
	“Excalibur provides an end to end business consulting service that offers reliable insight, and expertise in communications and technology.” Source: company website · checked Sep 3, 2026
11	Business SystemsIndirect evidence	London, United Kingdom	51-200	71
	“Business Systems is a trusted transformation partner with over 35 years of experience helping CX teams and contact centres become smarter, faster and more compliant.” Source: company website · checked Sep 3, 2026
12	LTK Consultants LTDPartial evidence	Park, United Kingdom	51-200	63
	“LTK are a outsourced solutions provider, assisting you to reach your goals through customer retention, sales growth, business & strategy development/ implementation and people…” Source: company website · checked Sep 3, 2026
13	PracedoIndirect evidence	London, United Kingdom	51-200	49
	“At Pracedo, we're not just Salesforce Consultants.” Source: company website · checked Sep 3, 2026
14	Process Management International PMIIndirect evidence	Meriden, United Kingdom	11-50	45
	“Process Management International (PMI) has been at the forefront of business improvement consultancy and training since 1984.” Source: company website · checked Sep 3, 2026
15	Purple SquarePartial evidence	Gatwick, United Kingdom	51-200	37
	“Purple Square CX, is a Customer Experience Advisory that offers a diverse range of services aimed at enhancing customer interactions for businesses.” Source: company website · checked Sep 3, 2026
16	In2action LTDPartial evidence	Cowes, United Kingdom	11-50	36
	“At In2action, we believe in delivering out of this world customer experiences.” Source: company website · checked Sep 3, 2026
17	Market Intelligence InternationalIndirect evidence	London, United Kingdom	51-200	35
	“Market Intelligence International (Marketii) is a trusted advisor to the world’s leading organizations in technology, medical devices, and consumer products.” Source: company website · checked Sep 3, 2026
18	Nebula ConsultingIndirect evidence	London, United Kingdom	11-50	34
	“As a Salesforce registered partner, we specialise in implementing and supporting Salesforce CRM and B2B Marketing Automation services.” Source: company website · checked Sep 3, 2026
19	Kpmg NunwoodPartial evidence	Leeds, United Kingdom	51-200	34
	“KPMG Nunwood specialises in customer experience improvement.” Source: company website · checked Sep 3, 2026
20	Global Leader GroupIndirect evidence	London, United Kingdom	11-50	31
	“Global Leader Group is a collection of committed and experienced practitioners who share a deep-rooted desire to make a difference by helping organizations and individuals live…” Source: company website · checked Sep 3, 2026
21	PerformaIndirect evidence	Stonehouse, United Kingdom	51-200	29
	“Performa \| Summit Salesforce Partner & Agentforce Specialists Performa is a Summit-level Salesforce consultancy and Agentforce specialist, helping businesses of all sizes unlock…” Source: company website · checked Sep 3, 2026
22	Gemseek, Part Of Accenture SongPartial evidence	London, United Kingdom	51-200	25
	“We are here to help global enterprises design, build and scale up their customer experience programs.” Source: company website · checked Sep 3, 2026
23	ComnexaPartial evidence	London, United Kingdom	51-200	24
	“Comnexa is a Salesforce consulting partner.” Source: company website · checked Sep 3, 2026
24	Innovation Visual LimitedPartial evidence	Elstead, United Kingdom	11-50	23
	“We're a consulting agency and think of ourselves as agents of change, driven by technology.” Source: company website · checked Sep 3, 2026
25	Supply Source INCIndirect evidence	Glenrothes, United Kingdom	51-200	18
	“Supply Source* Inc, an Oregon-based company, is striving to be a problem solver in areas that help international and domestic businesses grow sales, improve efficiency, and reduce…” Source: company website · checked Sep 3, 2026

Showing 25 of 1,286 customer success consulting firms based in the United Kingdom

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Customer success consulting firms based in the United Kingdom at a glance

As of Sep 3, 2026

1-10Median size (employees)

LondonLargest hub · 480 HQs

502Contacts with mobile numbers

Sep 3, 2026Data refreshed

Companies by employee count

1-10

1,055

11-50

167

51-200

201-500

501-1,000

1,001-5,000

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 customer success consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “customer success consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among customer success consulting firms, 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 an evidence 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, 1,680 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 3, 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.

Customer success consulting firms by metro

Customer success consulting firms in London480
Customer success consulting firms in Manchester35

Frequently asked

How many customer success consulting firms are there based in the United Kingdom?

RevenueBase identified 1,286 customer success consulting firms 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?

Vertex Data Science, headquartered in London, tops this list with the largest team on record.

Which city has the most customer success consulting firms?

London leads with 480 headquartered companies, followed by Manchester (35) and Leeds (19).

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 1,680 verified decision-maker contacts tracked across these 1,286 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 3, 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 SmartSearch, 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.