Company lists · Data refreshed September 2026

Top 25 Customer retention consulting firms based in London, United Kingdom

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

Compiled by the RevenueBase Data Team Data refreshed Sep 10, 2026 82 companies tracked

RevenueBase identified 82 customer retention consulting firms headquartered in London, United Kingdom as of September 2026 and tracks 4,510 professional contacts across them, including 2,178 with verified work emails and 480 with mobile numbers. London is the largest hub.

This list covers customer retention consulting firms headquartered in London, 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 10, 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 10, 2026 86% judged on-target in blind review

82Companies

4,510Contacts tracked

2,178Verified emails

480Mobile numbers

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The 25 largest customer retention consulting firms based in London, United Kingdom

Ranked by team size

Top 25 of 82 customer retention consulting firms based in London, United Kingdom, ranked by team size, largest first. Data refreshed Sep 10, 2026. RevenueBase Smart Search rates how each company's information relates to customer retention consulting firms: 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	TLC Worldwide	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	201-500	979 contacts →
	Partial evidence “TLC Worldwide is a global leader in customer engagement, loyalty, and reward solutions.” Source: RevenueBase Database · checked Sep 10, 2026
2	Momentumabm	Indirect evidence	London, United KingdomHQ checked Sep 10, 2026	51-200	89 contacts →
	Indirect evidence “MomentumABM is a growth consultancy that enables global organizations to achieve market-beating performance by winning, growing, and retaining their most valuable client…” Source: RevenueBase Database · checked Sep 10, 2026
3	The Tecsa Group	Indirect evidence	London, United KingdomHQ checked Sep 10, 2026	51-200	66 contacts →
	Indirect evidence “Tecsa is a specialist retail loyalty and analytics consultancy founded and led by former retail executives who built and ran major loyalty programmes, including Nectar, Holland &…” Source: RevenueBase Database · checked Sep 10, 2026
4	Engage HUB	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	51-200	49 contacts →
	Partial evidence “Every customer is unique.” Source: RevenueBase Database · checked Sep 10, 2026
5	The Foundation	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	49 contacts →
	Partial evidence “Since we’ve helped ambitious leaders and organisations create true customer-led success.” Source: RevenueBase Database · checked Sep 10, 2026
6	Market Intelligence International	Indirect evidence	London, United KingdomHQ checked Sep 10, 2026	51-200	35 contacts →
	Indirect evidence “Market Intelligence International (Marketii) is a trusted advisor to the world’s leading organizations in technology, medical devices, and consumer products.” Source: RevenueBase Database · checked Sep 10, 2026
7	Kpmg Nunwood	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	51-200	33 contacts →
	Partial evidence “KPMG Nunwood specialises in customer experience improvement.” Source: RevenueBase Database · checked Sep 10, 2026
8	Acrotrend	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	51-200	27 contacts →
	Partial evidence “Acrotrend is a full-service customer analytics consultancy specialising in enhancing customer lifetime value for its clients using industry expertise, practical data science and…” Source: RevenueBase Database · checked Sep 10, 2026
9	Loop Horizon	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	22 contacts →
	Partial evidence “We are a consulting & technology company with expertise across Consumer, B2B and Health.” Source: RevenueBase Database · checked Sep 10, 2026
10	Realservice	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	14 contacts →
	Partial evidence “RealService is a customer experience consultancy specialising in the property industry.” Source: RevenueBase Database · checked Sep 10, 2026
11	Equantiis	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	12 contacts →
	Partial evidence “Whilst Equantiis is no more, the fabulous consulting team are now in Spherica Consulting.” Source: RevenueBase Database · checked Sep 10, 2026
12	Elliotdigital Retention Marketing Agency	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	1-10	9 contacts →
	Partial evidence “We build dynamic strategies that are creative, data-driven and customer centric, to reach new heights for our brand partners.” Source: RevenueBase Database · checked Sep 10, 2026
13	Voxal Consulting	Strong evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	9 contacts →
	Strong evidence “Based in the UK, Voxal is a consulting company delivering management and customer experience (strategy advice, training, measurement, data analysis) consulting services to…” Source: RevenueBase Database · checked Sep 10, 2026
14	Strat7 Rainmakers	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	5 contacts →
	Partial evidence “We are customer strategy consultants bringing customer insight into the heart of your business in a practical, commercially focussed way - to help you better plan your business…” Source: RevenueBase Database · checked Sep 10, 2026
15	Brio Research And Consulting	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	1-10	5 contacts →
	Partial evidence “Brio provides clear and precise direction on how to improve your customers’ experience.” Source: RevenueBase Database · checked Sep 10, 2026
16	ALG Consult	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	1-10	5 contacts →
	Partial evidence “We help businesses, who sell to other businesses, to find, acquire and delight new customers and capture the most value from their existing ones.” Source: RevenueBase Database · checked Sep 10, 2026
17	Ingage Marketing	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	1-10	3 contacts →
	Partial evidence “Update as of August 2025: Ingage has now been acquired by In Digital to build a stronger, more connected customer experience offering.” Source: RevenueBase Database · checked Sep 10, 2026
18	Symbia Advisors	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	1-10	2 contacts →
	Partial evidence “We support you to maximise customer value and monetise your data, providing unbiased advice and experience throughout your journey.” Source: RevenueBase Database · checked Sep 10, 2026
19	Volt Media	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	1-10	2 contacts →
	Partial evidence “Volt Media is a retention and lifecycle studio for independent restaurants, bars, cafes, and hospitality groups.” Source: RevenueBase Database · checked Sep 10, 2026
20	Gunpowder Consulting	Indirect evidence	London, United KingdomHQ checked Sep 10, 2026	1-10	2 contacts →
	Indirect evidence “Gunpowder exists to help you to build a more reliable, sustainable and enjoyable new business engine - even if you’re not naturally into selling.” Source: RevenueBase Database · checked Sep 10, 2026
21	Blackburn Digital	Indirect evidence	London, United KingdomHQ checked Sep 10, 2026	1-10	2 contacts →
	Indirect evidence “I am a CRM Partner for B2C brands.” Source: RevenueBase Database · checked Sep 10, 2026
22	Jermaine Edwards	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	1-10	2 contacts →
	Partial evidence “The #1 undervalued reason businesses struggle to grow revenue predictably in good and tough times is not their ability to acquire more customers.” Source: RevenueBase Database · checked Sep 10, 2026
23	Delivering Difference	Partial evidence	London, United KingdomHQ checked Sep 10, 2026	1-10	2 contacts →
	Partial evidence “We are unashamedly obsessed with customer experience.” Source: RevenueBase Database · checked Sep 10, 2026
24	Faye Bennett Consultancy Services	Indirect evidence	London, United KingdomHQ checked Sep 10, 2026	1-10	2 contacts →
	Indirect evidence “Faye Bennett Consultancy Services focuses on your service strategy so that you can differentiate from your competition, win new and renewed business and lead the market with the…” Source: RevenueBase Database · checked Sep 10, 2026
25	Any-3 LTD	Indirect evidence	London, United KingdomHQ checked Sep 10, 2026	11-50	1 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 10, 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: customer retention consulting firms. 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 customer retention consulting firms.
Partial evidence: Its own public description names part of customer retention consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name customer retention consulting firms. 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 82 customer retention consulting firms based in London, United Kingdom

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Customer retention consulting firms based in London, United Kingdom at a glance

As of Sep 10, 2026

48.3%Verified-email coverage

10.6%Mobile-number coverage

55.0Average contacts per company

1-10Median size (employees)

98.8%Largest-city concentration · London

Sep 10, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 12.0d

2,0170–30

14931–60

161–90

190–180

10180+

Company record updated

Median 62.0d

00–30

1,97931–60

1,98761–90

35490–180

190180+

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 retention consulting firms, 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 London, United Kingdom whose own description of what they do matches “customer retention consulting firms”. 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 customer retention consulting firms), 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 customer retention consulting firms, and records with no verified work email. Companies headquartered outside London 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, 2,178 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 10, 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 retention consulting firms by metro in the United Kingdom

Customer retention consulting firms in London81

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 customer retention consulting firms, 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 customer retention consulting firms are there based in London, United Kingdom?

RevenueBase identified 82 customer retention consulting firms headquartered in London, 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?

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

Which city has the most customer retention consulting firms?

London leads with 81 headquartered companies, followed by Manchester (4) and Leeds (4).

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 2,178 verified decision-maker contacts tracked across these 82 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 10, 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.