30 leading multinational companies in London (2026 list)

These London-headquartered multinational companies are large enterprises, primarily operating in professional services, financial services, and telecommunications. Among them are EY, a global organization providing assurance, consulting, and tax services; Shell, a global energy company with a focus on cleaner solutions; and HSBC, a global financial services organization serving individuals, companies, and governments. Also notable are Vodafone, which connects people globally through technology, and G4S, a security and facility services company.

The list reflects London's strength as a hub for major financial institutions and professional services firms, with companies like Barclays, Standard Chartered, and Lloyds Banking Group all based in the city. The presence of global energy giants like Shell and bp, alongside telecommunications providers such as BT Group, further highlights the diverse yet interconnected nature of these large multinational operations.

#	Company	Industry	Headquarters	Employees	Founded
1	EY ey.com A global organization with diverse teams in over 150 countries provides assurance, consulting, law, strategy, tax, and transactions to help clients grow and transform	Professional Services	🇬🇧 London	404,207	n/a
2	Shell shell.com A global energy company with a focus on cleaner energy solutions, serving millions of customers through retail service stations worldwide	Oil and Gas	🇬🇧 London	208,511	n/a
3	HSBC hsbc.com A global financial services organization with a network spanning 63 countries, serving individuals, companies, and governments, creating opportunities for customers worldwide	Financial Services	🇬🇧 London	197,879	n/a
4	Vodafone vodafone.com Using technology to connect people globally, drive social change, and improve lives while emphasizing the importance of humanity and collaboration	Telecommunications	🇬🇧 London	142,740	1982
5	G4S g4s.com A leading security and facility services company providing proactive security services, cutting-edge technology, and integrated solutions to help clients focus on their core business	Security and Investigations	🇬🇧 London	116,486	1901
6	Aon aon.com The company provides advice and solutions to clients worldwide, helping them make better decisions to protect and grow their business	Financial Services	🇬🇧 London	93,574	n/a
7	GSK gsk.com Uniting science, technology, and talent to advance healthcare and disease prevention through collaborative innovation and community engagement.	Pharmaceutical Manufacturing	🇬🇧 London	92,092	n/a
8	bp bp.com Investing in a balanced energy system by transitioning from oil and gas to lower-carbon energy, convenience stores, and power trading	Oil and Gas	🇬🇧 London	85,000	1909
9	Barclays home.barclays A British universal bank with global presence, offering consumer banking, payments, corporate and investment banking services, supported by technology and operational solutions	Financial Services	🇬🇧 London	82,417	n/a
10	Kingfisher plc kingfisher.com International home improvement company with 1,900 stores across Europe Offering products and services for consumers and trade professionals to create better homes	Retail	🇬🇧 London	80,000	n/a
11	Standard Chartered sc.com An international banking group with a presence in 53 markets, driving commerce and prosperity through diversity and values Listed on London and Hong Kong Stock Exchanges	Banking	🇬🇧 London	79,401	n/a
12	BT Group bt.com A global communications services company connecting people through technology to address challenges like the pandemic, climate change, and cyber security	Telecommunications	🇬🇧 London	73,712	n/a
13	Lloyds Banking Group lloydsbankinggroup.com This company focuses on creating a more sustainable and inclusive future in the financial services industry, while supporting customers' changing needs	Financial Services	🇬🇧 London	57,702	n/a
14	WTW wtwco.com Offering data-driven solutions in people, risk, and capital areas, leveraging global expertise to enhance strategy, resilience, workforce motivation, and performance	Financial Services	🇬🇧 London	55,656	n/a
15	BAE Systems baesystems.com The company provides advanced technology-led defense, aerospace, and security solutions, with a skilled workforce in over 40 countries, focusing on innovation and long-term commitment	Defense and Space Manufacturing	🇬🇧 London	55,143	1999
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16	FCA Fiat Chrysler Automobiles stellantis.com A leading automaker and mobility provider now known as Stellantis, dedicated to creating innovative transportation solutions for the future	Motor Vehicle Manufacturing	🇬🇧 London	47,673	n/a
17	BAT bat.com Global consumer goods company focused on transitioning adult smokers to scientifically substantiated reduced-risk smokeless alternatives across multiple international markets.	Manufacturing	🇬🇧 London	46,311	1902
18	BBC bbc.co.uk Leading public service broadcaster, creates impartial, independent, distinctive, world-class programmes and content; informs, educates, entertains millions globally.	Broadcast Media Production and Distribution	🇬🇧 London	42,697	1922
19	WPP wpp.com Creative transformation company uses creativity to build better futures for people, planet, clients, and communities	Advertising Services	🇬🇧 London	41,040	n/a
20	Rio Tinto riotinto.com Provides essential materials including iron ore, low carbon aluminum, copper, borates, and titanium for various global industries and daily life.	Mining	🇬🇧 London	40,794	1873
21	Marks and Spencer jobs.marksandspencer.com Global retailer delivering quality products through physical and digital channels while prioritizing innovation and value for millions of customers across the world.	Retail	🇬🇧 London	40,055	1884
22	RELX relx.com Global provider of information-based analytics for professionals across industries, helping customers make informed decisions through innovative solutions and technologies	Technology, Information and Media	🇬🇧 London	37,600	n/a
23	Virgin virgin.com A global investment group with diverse companies in travel, health, entertainment, telecommunications, and space, focused on customer experience and sustainability.	Venture Capital and Private Equity Principals	🇬🇧 London	36,222	n/a
24	Aviva aviva.com This company prioritizes their people, striving to create an inclusive workplace with market-leading benefits for employees and a strong connection to customers and communities	Insurance	🇬🇧 London	36,000	1696
25	Diageo diageo.com Global leader in premium drinks, with over 200 brands sold in 180 countries Committed to sustainability, innovation, and excellence worldwide	Beverage Manufacturing	🇬🇧 London	34,137	n/a
26	Hays haysplc.com Specialist recruitment and workforce solutions provider offering advisory services, career transitions, and employer brand positioning, with a focus on empowering people and businesses to succeed globally	Staffing and Recruiting	🇬🇧 London	31,854	n/a
27	Rolls-Royce rolls-royce.com Engineering excellence driving critical technologies for air, sea, and land, powering, protecting, and connecting people worldwide.	Industrial Machinery Manufacturing	🇬🇧 London	31,649	n/a
28	Intertek intertek.com A global provider of Total Quality Assurance solutions, offering Testing, Inspection, Certification services to industries worldwide through a vast network of labs and offices	International Trade and Development	🇬🇧 London	31,152	1885
29	UK Ministry of Defence gov.uk The company works to protect the security and interests of the United Kingdom, providing necessary training, equipment, and support for the Armed Forces	Defense and Space Manufacturing	🇬🇧 London	30,901	n/a
30	CHANEL chanel.com A global leader in luxury product creation, CHANEL offers a wide range of high-end fashion, accessories, fragrances, skincare, and more	Retail Luxury Goods and Jewelry	🇬🇧 London	30,431	n/a

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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 11, 2026.

30 leading multinational companies in London

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