Company lists · Data verified August 2026

Top 25 Advertising law firms based in London, United Kingdom

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 66 companies tracked

There are 66 advertising law firms headquartered in London, United Kingdom (RevenueBase, August 2026). RevenueBase tracks 867 professional contacts across them, including 552 with verified work emails and 53 with mobile numbers. London is the largest hub.

This list covers advertising law 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. Data current as of August 28, 2026.

66Companies

867Contacts tracked

552Verified emails

53Mobile numbers

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The 25 largest advertising law firms based in London, United Kingdom

Ranked by team size

Top 25 of 66 advertising law firms based in London, 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	J A Kemp	London	201-500	225	173
2	LEE & Thompson LLP	London	51-200	97	78
3	Simkins LLP	London	51-200	81	57
4	Page White Farrer	London	51-200	61	48
5	Beck Greener LLP	London	51-200	44	36
6	Stephens	London	11-50	39	13
7	Agile IP LLP	London	n/a	34	2
8	Waterfront LAW	London	11-50	15	13
9	Archer, Evrard & Sigurdsson	London	1-10	15	9
10	AA Thornton	London	201-500	15	4
11	Sipara	London	11-50	14	12
12	Patent Boutique LLP	London	11-50	13	11
13	Williams Powell	London	11-50	13	11
14	Hansel Henson	London	11-50	9	9
15	Abbas Media LAW	London	1-10	8	5
16	Cohen Davis Solicitors	London	11-50	8	1
17	Kepler Wolf	London	11-50	7	6
18	Fortwell Solicitors	London	1-10	7	5
19	Cassadys Solicitors	London	1-10	5	2
20	Pail Solicitors Limited	London	1-10	5	1
21	M LAW LLP	London	11-50	4	4
22	Raftermarsh LAW Firm	London	1-10	4	4
23	Marram LAW	London	1-10	4	3
24	Greengage LLP	London	1-10	3	3
25	Harbottle & Lewis LLP	London	51-200	3	2

Showing 25 of 66 advertising law firms based in London, United Kingdom

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Advertising law firms based in London, United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 66 HQs

53Contacts with mobile numbers

3Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

Advertising law firms by metro in the United Kingdom

Metro	Companies
Advertising law firms in London	66
Advertising law firms in Bristol	6
Advertising law firms in Liverpool	5
Advertising law firms in Leeds	4
Advertising law firms in Manchester	4
Advertising law firms in Ilford	2
Advertising law firms in Colchester	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 “advertising law firms”, with match quality audited by blind human judging, and headquartered in London, 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; 3 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 advertising law firms are there based in London, United Kingdom?

There are 66 advertising law firms headquartered in London, United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

J A Kemp, headquartered in London, tops this list with the largest team on record.

Which city has the most advertising law firms?

London leads with 66 headquartered companies, followed by Bristol (6) and Liverpool (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 552 verified decision-maker contacts tracked across these 66 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.