# Law Practice companies headquartered in London

Tamtam tracks 117 Law Practice companies headquartered in London. This list ranks the 30 largest by number of employees on LinkedIn, led by DLA Piper, Clifford Chance and Clyde & Co. Their median headcount is 3,161. Half of them were founded in 1889 or later.

These London-based companies are predominantly large law firms offering a wide range of legal services globally. They advise corporations, financial institutions, and governments on complex legal matters, transactions, and disputes. Notable firms include DLA Piper, a global firm managing cross-border projects, Clifford Chance, which provides legal advice to diverse clients, and Clyde & Co, specializing in insurance and transport.

The data shows a strong concentration of global legal expertise within London, with many firms like Freshfields and Linklaters providing innovative solutions in complex markets. Several of these firms, such as Freshfields (founded 1743) and Addleshaw Goddard (founded 1775), have long histories, indicating established legal practices.

🇬🇧 London · 30 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [DLA Piper](https://www.tamtam.ai/c/dla-piper) (dlapiper.com)<br>Global law firm providing innovative legal services, managing cross-border projects, transactions, disputes, and supporting business growth worldwide. | Law Practice | 🇬🇧 London | 13,449 | 2005 |
| 2 | [Clifford Chance](https://www.tamtam.ai/c/clifford-chance) (cliffordchance.com)<br>A global law firm providing high-quality legal advice to a diverse range of clients, including corporations, governments, regulators, and non-profit organizations worldwide | Law Practice | 🇬🇧 London | 8,435 | 1987 |
| 3 | [Clyde & Co](https://www.tamtam.ai/c/clyde-and-co) (clydeco.com)<br>A global law firm specializing in insurance, transport, infrastructure, energy, and trade Committed to diversity, community support, and environmental sustainability | Law Practice | 🇬🇧 London | 7,472 | 1933 |
| 4 | [Linklaters](https://www.tamtam.ai/c/linklaters) (linklaters.com)<br>It is a global law firm providing legal expertise and innovative solutions to clients navigating complex markets and regulatory environments. | Law Practice | 🇬🇧 London | 7,110 |  |
| 5 | [Freshfields](https://www.tamtam.ai/c/freshfields) (freshfields.com)<br>Global law firm supporting leading corporations, financial institutions, and governments on ground-breaking mandates worldwide through 2,800+ lawyers in multiple offices | Law Practice | 🇬🇧 London | 6,920 | 1743 |
| 6 | [Eversheds Sutherland](https://www.tamtam.ai/c/eversheds-sutherland) (eversheds-sutherland.com)<br>Global law practice offering high quality, innovative solutions for diverse clients worldwide, specializing in complex business issues with a people-focused approach | Law Practice | 🇬🇧 London | 6,217 |  |
| 7 | [Ashurst](https://www.tamtam.ai/c/ashurst) (ashurst.com)<br>Leading global law firm offering legal, risk consulting, and NewLaw services. Manages complex multi-jurisdictional transactions, disputes, and projects for corporates, financial institutions, and governments. | Law Practice | 🇬🇧 London | 5,236 |  |
| 8 | [DWF](https://www.tamtam.ai/c/dwf) (dwfgroup.com)<br>Global provider of integrated legal and business services across various sectors, offering bespoke solutions for clients with efficiency, price certainty, and transparency | Law Practice | 🇬🇧 London | 4,848 | 1977 |
| 9 | [Pinsent Masons](https://www.tamtam.ai/c/pinsent-masons) (pinsentmasons.com)<br>Multinational professional services firm, legal foundation, diverse skill sets, technology, processes, competitive advantage clients, business-critical advice complex regulatory environments. | Law Practice | 🇬🇧 London | 4,403 |  |
| 10 | [London Commercial Solicitors](https://www.tamtam.ai/c/london-commercial-solicitors)<br>Specialized team of lawyers offering comprehensive and personalized legal services to businesses and individuals, with a focus on achieving expectations and solving legal issues | Law Practice | 🇬🇧 London | 3,778 |  |
| 11 | [Crown Prosecution Service](https://www.tamtam.ai/c/crown-prosecution-service) (cps.gov.uk)<br>Prosecutes criminal cases investigated by police, decides charges, prepares court cases, supports victims, ensuring justice and public interest. | Law Practice | 🇬🇧 London | 3,735 | 1986 |
| 12 | [Addleshaw Goddard](https://www.tamtam.ai/c/addleshaw-goddard) (addleshawgoddard.com)<br>Providing comprehensive legal advice and solutions across over 50 business law areas to clients in more than 100 countries worldwide. | Law Practice | 🇬🇧 London | 3,391 | 1775 |
| 13 | [Bird & Bird](https://www.tamtam.ai/c/bird-and-bird) (twobirds.com)<br>Providing legal services worldwide with expertise in technology and digital transformation, supporting clients across multiple industries and regions. | Law Practice | 🇬🇧 London | 3,196 | 1846 |
| 14 | [DAC Beachcroft](https://www.tamtam.ai/c/dac-beachcroft) (dacbeachcroft.com)<br>Leading international legal business, partnering with clients for sustainable growth, defending their business and reputation with tailored commercial, transactional, claims, risk, and advisory legal services. | Law Practice | 🇬🇧 London | 3,183 |  |
| 15 | [Law AI](https://www.tamtam.ai/c/law-ai) (guden.org)<br>A mobile app using AI to help users with legal needs by matching them with lawyers, providing legal research, and document drafting tools | Law Practice | 🇬🇧 London | 3,161 |  |
| 16 | [CMS UK](https://www.tamtam.ai/c/cms-uk) (cms.law)<br>Providing expert legal advice worldwide through a network of independent law firms, combining local knowledge with global strategic insight. | Law Practice | 🇬🇧 London | 3,160 |  |
| 17 | [Kennedys](https://www.tamtam.ai/c/kennedys) (kennedyslaw.com)<br>Global law firm specializing in litigation, insurance, and liability sectors with expertise in advisory services Operates worldwide with a focus on regulatory impact | Law Practice | 🇬🇧 London | 3,028 | 1899 |
| 18 | [Simmons & Simmons](https://www.tamtam.ai/c/simmons-and-simmons) (simmons-simmons.com)<br>Legal services for regulated sectors including finance, energy, healthcare, and technology, focusing on business partnership and efficient solutions. | Law Practice | 🇬🇧 London | 2,921 |  |
| 19 | [Herbert Smith Freehills](https://www.tamtam.ai/c/herbert-smith-freehills) (hsfkramer.com)<br>Global law firm providing comprehensive legal services across multiple sectors, focusing on client solutions and international expertise. | Law Practice | 🇬🇧 London | 2,491 | 2012 |
| 20 | [Osborne Clarke](https://www.tamtam.ai/c/osborne-clarke) (osborneclarke.com)<br>Provide commercial legal advice and services across sectors, focusing on client success amid digital, economic, and environmental challenges worldwide. | Law Practice | 🇬🇧 London | 2,480 | 1748 |
| 21 | [Slaughter and May](https://www.tamtam.ai/c/slaughter-and-may) (slaughterandmay.com)<br>A prestigious law firm advising on international transactions, with expertise in M&A, corporate law, financing, tax, competition, dispute resolution, real estate, and more | Law Practice | 🇬🇧 London | 2,086 | 1889 |
| 22 | [HFW](https://www.tamtam.ai/c/hfw) (hfw.com)<br>Global law firm specializing in aerospace, commodities, construction, energy, insurance, and shipping sectors with over 600 lawyers across offices worldwide | Law Practice | 🇬🇧 London | 1,861 | 1883 |
| 23 | [Shoosmiths](https://www.tamtam.ai/c/shoosmiths) (shoosmiths.com)<br>A leading law firm in the UK and Brussels, known for exceptional service, innovative solutions, and commitment to ESG and community support | Law Practice | 🇬🇧 London | 1,596 | 1845 |
| 24 | [Ampa - Legal & Professional Services](https://www.tamtam.ai/c/ampa-legal-and-professional-services) (ampa.co.uk)<br>Ampa is a group of legal and professional services companies in the UK, dedicated to unlocking potential for individuals and businesses | Law Practice | 🇬🇧 London | 1,565 |  |
| 25 | [The Law Society](https://www.tamtam.ai/c/the-law-society) (lawsociety.org.uk)<br>This company promotes and protects solicitors, upholds the rule of law, and supports justice in England and Wales ⚖️ | Law Practice | 🇬🇧 London | 1,526 | 1825 |
| 26 | [Stephenson Harwood LLP](https://www.tamtam.ai/c/stephenson-harwood-llp) (stephensonharwood.com)<br>International law firm specializing in energy, healthcare, private capital, technology, and transportation sectors with global offices and extensive client partnerships. | Law Practice | 🇬🇧 London | 1,484 | 1828 |
| 27 | [Mills & Reeve](https://www.tamtam.ai/c/mills-and-reeve) (mills-reeve.com)<br>Legal firm providing tailored advice and responsive support globally, driven by values of ambition, openness, care, and collaboration. | Law Practice | 🇬🇧 London | 1,483 | 1880 |
| 28 | [Mishcon de Reya LLP](https://www.tamtam.ai/c/mishcon-de-reya-llp) (mishcon.com)<br>A London-based law firm providing high-quality, cross-border legal services while valuing diversity, creativity, integrity, and building strong client relationships | Law Practice | 🇬🇧 London | 1,480 | 1937 |
| 29 | [Withers](https://www.tamtam.ai/c/withers) (withersworldwide.com)<br>It provides legal services to individuals, families, and businesses, focusing on private capital and addressing complex legal challenges globally. | Law Practice | 🇬🇧 London | 1,410 | 1896 |
| 30 | [Charles Russell Speechlys](https://www.tamtam.ai/c/charles-russell-speechlys) (charlesrussellspeechlys.com)<br>International law firm specializing in private capital, combining personal, family, and business legal expertise with global reach and partnerships. | Law Practice | 🇬🇧 London | 1,397 |  |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.

## More company lists in London

- [The largest companies in London](https://www.tamtam.ai/l/largest-companies-london) (12,882)
- [Multinational companies in London](https://www.tamtam.ai/l/multinational-companies-london) (3,652)
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- [Financial services firms in London](https://www.tamtam.ai/l/financial-services-firms-london) (1,824)
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- [Software Development companies in London](https://www.tamtam.ai/l/software-development-companies-london) (1,217)
- [Retail chains in London](https://www.tamtam.ai/l/retail-chains-london) (942)
- [IT Services and IT Consulting companies in London](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-london) (693)
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- [Marketing and communications agencies in London](https://www.tamtam.ai/l/marketing-agencies-london) (533)
- [Retail Apparel and Fashion companies in London](https://www.tamtam.ai/l/retail-apparel-and-fashion-companies-london) (498)
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- [Hotel and hospitality groups in London](https://www.tamtam.ai/l/hospitality-groups-london) (445)
- [Luxury brands in London](https://www.tamtam.ai/l/luxury-brands-london) (428)
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## The same list elsewhere in United Kingdom

- [Law Practice companies in the United Kingdom](https://www.tamtam.ai/l/law-practice-companies-united-kingdom) (288)
- [Law Practice companies in England](https://www.tamtam.ai/l/law-practice-companies-england) (255)

## The same list elsewhere

- [Law Practice companies in the world](https://www.tamtam.ai/l/law-practice-companies-in-the-world) (4,496)
- [Law Practice companies in Europe](https://www.tamtam.ai/l/law-practice-companies-in-europe) (2,979)

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Source: https://www.tamtam.ai/l/law-practice-companies-london