# The 30 largest companies with a mobile app in London
Tamtam tracks 667 companies with a mobile app headquartered in London. This list ranks the 30 largest by number of employees on LinkedIn, led by UK Civil Service, Vodafone and ANY Company. Their median headcount is 21,000. Half of them were founded in 1994 or later.
These London-based companies are predominantly large enterprises, with a strong presence in sectors such as financial services, telecommunications, and retail. Many of them are well-established, with founding dates stretching back over a century. The list includes the UK Civil Service, which implements government policies, and Vodafone, a telecommunications company connecting people globally. Also present are bp, investing in lower-carbon energy, and Kingfisher plc, an international home improvement company. Sainsbury's is a leading UK retailer, and the BBC is a public service broadcaster creating world-class content.
A notable pattern is the concentration of headquarters in London across a diverse range of industries. This indicates the city's role as a central hub for major operations in both public and private sectors. The mix of long-standing institutions like Sainsbury's, founded in 1869, and more recent large-scale ventures such as ANY Company, founded in 2018, demonstrates a blend of historical legacy and contemporary growth.
๐ฌ๐ง London ยท 30 companies ยท Updated Nov 11, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [UK Civil Service](https://www.tamtam.ai/c/uk-civil-service) (gov.uk)
This company implements government policies, delivering essential public services in the UK | Government Administration | ๐ฌ๐ง London | 238,504 | |
| 2 | [Vodafone](https://www.tamtam.ai/c/vodafone) (vodafone.com)
Using technology to connect people globally, drive social change, and improve lives while emphasizing the importance of humanity and collaboration | Telecommunications | ๐ฌ๐ง London | 142,740 | 1982 |
| 3 | [ANY Company](https://www.tamtam.ai/c/any-company) (any.company)
Connect, promote, and find partners with a focus on building stronger connections and faster growth in the global marketplace Tailored solutions for businesses | IT Services and IT Consulting | ๐ฌ๐ง London | 93,110 | 2018 |
| 4 | [bp](https://www.tamtam.ai/c/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 | ๐ฌ๐ง London | 85,000 | 1909 |
| 5 | [Kingfisher plc](https://www.tamtam.ai/c/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 | ๐ฌ๐ง London | 80,000 | |
| 6 | [Standard Chartered](https://www.tamtam.ai/c/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 | ๐ฌ๐ง London | 79,401 | |
| 7 | [BT Group](https://www.tamtam.ai/c/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 | ๐ฌ๐ง London | 73,712 | |
| 8 | [Sainsbury's](https://www.tamtam.ai/c/sainsbury-s) (sainsburys.jobs)
A leading UK retailer with over 1400 stores and a strong digital presence, offering affordable, greener products and convenient financial services to customers | Retail | ๐ฌ๐ง London | 68,549 | 1869 |
| 9 | [Lloyds Banking Group](https://www.tamtam.ai/c/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 | ๐ฌ๐ง London | 57,702 | |
| 10 | [FCA Fiat Chrysler Automobiles](https://www.tamtam.ai/c/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 | ๐ฌ๐ง London | 47,673 | |
| 11 | [BBC](https://www.tamtam.ai/c/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 | ๐ฌ๐ง London | 42,697 | 1922 |
| 12 | [Royal Mail](https://www.tamtam.ai/c/royal-mail) (linktr.ee)
Connecting businesses, customers, and communities in the UK by providing universal postal service to over 29 million addresses, aiming to be the best delivery company in Europe | Freight and Package Transportation | ๐ฌ๐ง London | 39,215 | |
| 13 | [John Lewis Partnership](https://www.tamtam.ai/c/john-lewis-partnership) (jlpjobs.com)
Employee-owned business operating department stores and supermarkets focused on quality service, retail innovation, and shared responsibility among partners for collective success and growth. | Retail | ๐ฌ๐ง London | 36,517 | |
| 14 | [HM Revenue & Customs](https://www.tamtam.ai/c/hm-revenue-and-customs) (gov.uk)
UK's tax, payments, and customs authority, collecting funds for public services, providing financial support, ensuring tax compliance, and combating fraudulent activities | Government Administration | ๐ฌ๐ง London | 26,882 | 2005 |
| 15 | [Santander UK](https://www.tamtam.ai/c/santander-uk) (santander.co.uk)
Providing personal and commercial financial products and services to millions of customers, fostering diversity and a positive workplace culture. | Banking | ๐ฌ๐ง London | 21,000 | |
| 16 | [Entain](https://www.tamtam.ai/c/entain) (entaingroup.com)
A global sports betting and gaming entertainment group with over 25 brands, focused on revolutionizing the industry and promoting diversity | Entertainment Providers | ๐ฌ๐ง London | 18,906 | |
| 17 | [Costa Coffee](https://www.tamtam.ai/c/costa-coffee) (costa.co.uk)
Global coffee brand offering stores, ready-to-drink products, self-serve machines, and home options, focusing on community and growth. | Retail | ๐ฌ๐ง London | 18,739 | 1971 |
| 18 | [Transport for London](https://www.tamtam.ai/c/transport-for-london) (tfl.gov.uk)
London-based transportation company leading in providing diverse travel options, focusing on customer feedback, technology innovation, and large-scale investments for city-wide mobility improvements | Non-profit Organizations | ๐ฌ๐ง London | 18,658 | 2000 |
| 19 | [Revolut](https://www.tamtam.ai/c/revolut) (revolut.com)
A fintech company on a mission to provide customers with more visibility, control, and freedom over their money through innovative products | Financial Services | ๐ฌ๐ง London | 18,462 | 2015 |
| 20 | [National Grid](https://www.tamtam.ai/c/national-grid) (nationalgrid.com)
Operate and develop electricity transmission and distribution networks, natural gas systems, and invest in clean energy infrastructure and technology ventures. | Utilities | ๐ฌ๐ง London | 17,432 | |
| 21 | [Lidl GB](https://www.tamtam.ai/c/lidl-gb) (careers.lidl.co.uk)
Retail grocery stores across the UK offering high-quality products at low prices, supported by extensive distribution and dedicated staff. | Retail | ๐ฌ๐ง London | 14,526 | 1994 |
| 22 | [John Lewis & Partners](https://www.tamtam.ai/c/john-lewis-and-partners) (jlpjobs.com)
Aiming to create a happier and more trusted way of doing business, this company emphasizes partnership to make a difference | Retail | ๐ฌ๐ง London | 12,437 | 1864 |
| 23 | [EE](https://www.tamtam.ai/c/ee) (ee.co.uk)
A leading mobile communications company in the UK, offering mobile and fixed services with the largest and fastest network coverage | Telecommunications | ๐ฌ๐ง London | 12,146 | 2012 |
| 24 | [Wise](https://www.tamtam.ai/c/wise-london) (wise.com)
Platform enabling individuals and businesses to hold multiple currencies, transfer money internationally, and spend abroad with low fees. | Financial Services | ๐ฌ๐ง London | 11,769 | 2011 |
| 25 | [Guy's and St Thomas'โ NHS Foundation Trust](https://www.tamtam.ai/c/guy-s-and-st-thomas-nhs-foundation-trust) (guysandstthomas.nhs.uk)
Provides high-quality healthcare services, clinical excellence, research, and community care through multiple hospitals and partnerships in London. | Hospitals and Health Care | ๐ฌ๐ง London | 11,655 | |
| 26 | [Deliveroo](https://www.tamtam.ai/c/deliveroo) (deliveroo.co.uk)
A global food delivery service working with thousands of restaurants and riders to offer top-notch delivery experiences in multiple countries | Software Development | ๐ฌ๐ง London | 10,910 | 2013 |
| 27 | [Barclays UK](https://www.tamtam.ai/c/barclays-uk) (search.jobs.barclays)
A company focused on helping individuals progress in their lives through financial services, digital innovation, career guidance, and customer-centric approach | Banking | ๐ฌ๐ง London | 9,925 | 1690 |
| 28 | [Google DeepMind](https://www.tamtam.ai/c/google-deepmind) (deepmind.google)
Advances artificial intelligence with breakthrough research. Solves complex problems like disease diagnosis, energy saving, and protein folding with safe, ethical AI. | Research Services | ๐ฌ๐ง London | 9,665 | 2010 |
| 29 | [BBC News](https://www.tamtam.ai/c/bbc-news) (bbc.com)
Global provider of trusted, accurate, and impartial news through TV, radio, online, and social media with extensive journalist network. | Broadcast Media Production and Distribution | ๐ฌ๐ง London | 9,410 | 1922 |
| 30 | [Financial Times](https://www.tamtam.ai/c/financial-times) (ft.com)
provides authoritative, accurate business news and information with a large digital subscription base, serving the global business community. | Newspaper Publishing | ๐ฌ๐ง London | 9,092 | |
## 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.
## 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)
- [Financial Services companies in London](https://www.tamtam.ai/l/financial-services-companies-london) (1,862)
- [Financial services firms in London](https://www.tamtam.ai/l/financial-services-firms-london) (1,824)
- [SaaS companies in London](https://www.tamtam.ai/l/saas-companies-london) (1,615)
- [Professional services firms in London](https://www.tamtam.ai/l/professional-services-firms-london) (1,248)
- [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)
- [Consulting firms in London](https://www.tamtam.ai/l/consulting-firms-london) (648)
- [IT services companies in London](https://www.tamtam.ai/l/it-services-companies-london) (607)
- [Subscription businesses in London](https://www.tamtam.ai/l/subscription-businesses-london) (544)
- [Venture capital and private equity firms in London](https://www.tamtam.ai/l/vc-and-private-equity-firms-london) (539)
- [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)
- [Advertising Services companies in London](https://www.tamtam.ai/l/advertising-services-companies-london) (480)
- [Companies with in-house R&D in London](https://www.tamtam.ai/l/r-and-d-companies-london) (477)
- [AI companies in London](https://www.tamtam.ai/l/ai-companies-london) (456)
- [Investment Management companies in London](https://www.tamtam.ai/l/investment-management-companies-london) (452)
- [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)
- [AI-native companies in London](https://www.tamtam.ai/l/ai-native-companies-london) (407)
- [E-commerce companies in London](https://www.tamtam.ai/l/ecommerce-companies-london) (384)
- [Fintech companies in London](https://www.tamtam.ai/l/fintech-companies-london) (384)
## The same list elsewhere in United Kingdom
- [Companies with a mobile app in the United Kingdom](https://www.tamtam.ai/l/companies-with-mobile-app-united-kingdom) (1,411)
- [Companies with a mobile app in Scotland](https://www.tamtam.ai/l/companies-with-mobile-app-scotland) (50)
- [Companies with a mobile app in Manchester](https://www.tamtam.ai/l/companies-with-mobile-app-manchester) (50)
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Source: https://www.tamtam.ai/l/companies-with-mobile-app-london