Company lists · Data verified August 2026

Top 25 Outbound marketing agencies based in the United Kingdom

Name: Outbound marketing agencies 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 4,654 companies tracked

There are 4,654 outbound marketing agencies headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 41,423 professional contacts across them, including 9,620 with verified work emails and 2,759 with mobile numbers. London is the largest hub.

This list covers outbound marketing agencies 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.

4,654Companies

41,423Contacts tracked

9,620Verified emails

2,759Mobile numbers

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The 25 largest outbound marketing agencies based in the United Kingdom

Ranked by team size

Top 25 of 4,654 outbound marketing agencies 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	NP Digital	London	1,001-5,000	862	306
2	Linney	Mansfield	1,001-5,000	651	450
3	Qualifa	Brighton	51-200	440	2
4	MVF	London	201-500	417	246
5	Newbase	London	501-1,000	282	28
6	The Telemarketing Company	Brighton	201-500	242	39
7	BNZSA	London	201-500	195	6
8	Connective3	London	51-200	153	93
9	SPARK	London	51-200	133	18
10	METIA	London	201-500	131	44
11	EC Outsourcing Powered By Ison Xperiences	Sheffield	1,001-5,000	115	1
12	Embryo	Manchester	51-200	88	49
13	Konica Minolta Marketing Services	London	501-1,000	85	1
14	Brainsouls	Birmingham	51-200	81	1
15	Stickyeyes	Leeds	201-500	78	36
16	OMNE	Ampthill	51-200	72	60
17	The Social Shepherd	London	51-200	72	37
18	RBH Creative Communications	Meriden	51-200	68	44
19	Armstrongb2b	Chester	51-200	67	49
20	Excelerate360	Hitchin	51-200	65	19
21	Sircles Digital Marketing Agency	Dudley	51-200	53	6
22	The Marketing Practice	London	501-1,000	52	30
23	D2ms	London	51-200	50	9
24	FLY PIE LTD	London	51-200	49	8
25	Stellites Technologies	Brimingham	51-200	35	8

Showing 25 of 4,654 outbound marketing agencies based in the United Kingdom

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 9,620 reachable decision-makers.

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Outbound marketing agencies based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 1333 HQs

2,759Contacts with mobile numbers

92Emails re-verified in last 30 days

Companies by employee count

1-10

3,234

11-50

1,174

51-200

183

201-500

501-1,000

1,001-5,000

5,001-10,000

Outbound marketing agencies by metro

Metro	Companies
Outbound marketing agencies in London	1333
Outbound marketing agencies in Manchester	228
Outbound marketing agencies in Birmingham	118
Outbound marketing agencies in Leeds	91
Outbound marketing agencies in Bristol	62
Outbound marketing agencies in Glasgow	60
Outbound marketing agencies in Liverpool	56

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 “outbound marketing agencies”, 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; 92 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 outbound marketing agencies are there based in the United Kingdom?

There are 4,654 outbound marketing agencies headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

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

Which city has the most outbound marketing agencies?

London leads with 1333 headquartered companies, followed by Manchester (228) and Birmingham (118).

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 9,620 verified decision-maker contacts tracked across these 4,654 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.