City view · 711 companies

Law firms in London

711 UK law firms name London on their website and publish an email address, as of September 29, 2026. WC2 is the busiest postcode district among those that publish one, and Microsoft 365 handles email for 19% of them.

Search law firms in London in Warmerly Open this search

Searching is free. You only spend allowance when you export.

Postcode districts

Which parts of London they cluster in

253 of the 711 publish a postcode. Among them, WC2 leads with 34. Districts with fewer than five companies are left out.

London law firms by postcode district (companies)
WC2	34 (13%)
EC4	26 (10%)
W1	26 (10%)
WC1	16 (6%)
EC2	14 (6%)
SE1	12 (5%)
EC3	11 (4%)
EC1	11 (4%)
SW1	5 (2%)

Contact routes

How law firms in London can be reached

Every company here publishes an email address. These are the other routes and signals their websites carry.

Company LinkedIn page43% · 303

Contact form32% · 228

A second route for when email goes unanswered.

Phone number37% · 265

Hiring or links a careers page22% · 158

Growing firms buy more. A useful first filter.

Companies House number21% · 152

VAT number9% · 63

Email and websites

What law firms in London run on

Who hosts their email decides which spam filter reads your message. What their site is built on says what else they already pay for.

Email provider

Email providers of law firms in London
Microsoft 365	133 (19%)
Mimecast	28 (4%)
Google Workspace	22 (3%)
IONOS	11 (2%)
Other or unknown	517 (73%)

Read from each domain's public MX record. If most of your list is on one provider, warm up a mailbox on that provider first. Filter by provider in the lead finder.

Built with

WordPress 60%
Contact Form 7 19%
Elementor 13%
Wix 8%
Gravity Forms 7%
WooCommerce 7%
Divi 4%
Next.js 4%

Share of these companies whose homepage loads each technology. Google Analytics is left out because nearly everyone runs it.

Founding year

How established law firms in London are

129 of them (18%) state a founding year on their site. This is how those split.

Law firms in London by founding year
Before 1980	27 (21%)
1980 to 1999	22 (17%)
2000 to 2009	40 (31%)
2010 to 2014	20 (16%)
2015 to 2019	14 (11%)
2020 or later	6 (5%)

How they describe themselves

What law firms in London call themselves

Some sites tell search engines exactly what kind of business they are, in structured data. These are the types they declare most often, which shows the mix inside this category.

Declared business types among law firms in London (companies)
Legal service	141 (20%)
Professional service	10 (1%)

Outreach playbook

How to reach law firms in London

What we have learned about emailing law firms. The numbers above tell you how many there are; this is how to get a reply.

Law firms buy on trust and risk. Lead with compliance, confidentiality and time recovered on non-billable work, and never with growth hacks. Formal but brief reads best.

Who to email

Managing partner at firms under 10 fee earners, who approves any spend.
Practice manager or COO at mid-sized firms, the real owner of software and suppliers.
Head of business development or marketing at firms large enough to have one.

What they will say back

“Our IT provider handles anything technical.”: Offer to talk to the IT provider directly. It removes work from the partner and often speeds the decision.
“We cannot risk client confidentiality.”: Explain in plain terms what data you touch and what you do not. If you never see matter data, say so first.
“Send it to our marketing team.”: Ask for a name. A warm handoff from a partner converts far better than a new cold email.

A first email that fits a London firm

Subject: non-billable time at [firm]

Dear [first name], firms of [firm]'s size tell us that chasing enquiries and follow-ups eats hours no one can bill. We help practices automate that part without touching matter data. Would a short overview be useful?

Replace the bracketed parts per company. In a Warmerly campaign they fill from the lead's own fields.

When to send

Early morning before court and client meetings, or end of day. Avoid Monday mornings, when diaries are set.

Questions

Law firms in London: common questions

How many law firms are there in London?

711 UK law firms in Warmerly's database name London on their website and publish an email address, counted on September 29, 2026. A company is matched when its site text mentions London, the same way a city search works in the lead finder, so a firm based elsewhere with a London office is included.

Which email provider do most law firms in London use?

Microsoft 365 runs email for 19% of them, followed by Mimecast at 4%. It is read from each domain's public MX records. It matters for cold email because Google and Microsoft filter differently, so a sending mailbox on the same provider as most of your list is worth warming up first.

How is London matched?

By full-text search over each company's own website text, the same match the lead finder uses when you type London into the city filter. It is broader than a registered address: 253 of these companies publish a postcode, which is where the district breakdown on this page comes from.

Can I get a list of law firms in London?

Yes. Searching the database in Warmerly is free, and you see the same count as this page before spending anything. Exporting or adding companies to a campaign uses your plan's monthly lead allowance. Every result is a business contact route the company publishes itself, and any company that has asked to be removed is excluded. This page shows totals only, never individual companies.

More law firms

Other industries in London

Where the numbers come from

Search 711 law firms in London

Filter them by size, founding year, technology and hiring, see what each record holds, then send from warmed-up mailboxes in the same tool.

Start free, search in minutes Have an account? Open this search

Warming up