Company lists · Data verified August 2026

Top 25 Data protection law firms based in the United Kingdom

Name: Data protection law firms 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 241 companies tracked

There are 241 data protection law firms headquartered in the United Kingdom (RevenueBase, August 2026). RevenueBase tracks 1,020 professional contacts across them, including 425 with verified work emails and 61 with mobile numbers. London is the largest hub.

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

241Companies

1,020Contacts tracked

425Verified emails

61Mobile numbers

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The 25 largest data protection law firms based in the United Kingdom

Ranked by team size

Top 25 of 241 data protection law firms 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	Hewardmills	London	11-50	46	30
2	Data Protection People	Leeds	11-50	39	21
3	Vaultinum	London	11-50	31	14
4	Privacy Culture	London	11-50	28	12
5	Securys Limited	London	11-50	27	12
6	DPO Consultancy	London	11-50	24	3
7	Taylor Hampton Solicitors Limited	London	11-50	21	13
8	ONE Compliance Cyber Limited	n/a	11-50	20	13
9	DPAS	Exeter	11-50	20	12
10	Gdprlocal LTD	Brighton	11-50	18	13
11	DQM GRC	Bucks	11-50	18	13
12	Claimsmiths	Manchester	11-50	17	11
13	IGS Information Governance Services	London	11-50	17	8
14	LEX Dinamica	London	11-50	17	5
15	Teal Compliance	Salford	11-50	16	12
16	AWO Agency	London	11-50	12	9
17	Pembroke Privacy	London	11-50	12	6
18	Trust Keith Your Always-On Privacy Partner	London	11-50	10	9
19	Privacy Partnership	London	11-50	10	3
20	Thomson Heath Jenkins & Associates	Cambridge	11-50	9	8
21	Privacy Helper	Bedford	11-50	9	5
22	Edpo European Data Protection Office	London	1-10	9	5
23	Higgs Newton Kenyon Solicitors	Liverpool	11-50	8	6
24	Digiphile	London	1-10	8	5
25	MDR ONE	London	11-50	8	4

Showing 25 of 241 data protection law firms based in the United Kingdom

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Data protection law firms based in the United Kingdom at a glance

As of Aug 28, 2026

1-10Median size (employees)

LondonLargest hub · 84 HQs

61Contacts with mobile numbers

1Emails re-verified in last 30 days

Companies by employee count

1-10

193

11-50

51-200

201-500

Data protection law firms by metro

Metro	Companies
Data protection law firms in London	84
Data protection law firms in Manchester	6
Data protection law firms in Cambridge	4
Data protection law firms in Southampton	4
Data protection law firms in Bedford	4
Data protection law firms in Brighton	4
Data protection law firms in Glasgow	3

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 “data protection law firms”, 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; 1 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 data protection law firms are there based in the United Kingdom?

There are 241 data protection law firms headquartered in the United Kingdom as of August 2026 (RevenueBase).

What is the largest company on this list?

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

Which city has the most data protection law firms?

London leads with 84 headquartered companies, followed by Manchester (6) and Cambridge (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 425 verified decision-maker contacts tracked across these 241 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.