Tamtam Start free

Top 100 companies with in-house R&D in England

Tamtam tracks 1,703 companies with in-house R&D headquartered in England. This list ranks the 100 largest by number of employees on LinkedIn, led by Shell, Unilever and Vodafone. Their median headcount is 11,769. Half of them were founded in 1946 or later. The most common headquarters are London (53), Cambridge (5) and Birmingham (3).

πŸ‡¬πŸ‡§ England100 companiesUpdated Nov 12, 2026

These large companies with in-house R&D in England are primarily major players in the energy, telecommunications, and pharmaceutical sectors. Many are headquartered in London, indicating a concentration of corporate research and development activities in the capital. The list includes global energy companies like Shell and bp, pharmaceutical giants such as GSK and AstraZeneca, and telecommunications providers like Vodafone and BT Group. Other notable companies are Unilever, a global consumer goods business, and Sainsbury's, a leading UK retailer.

A significant number of these companies were founded in the late 19th or early 20th century, including Unilever (1872), Sainsbury's (1869), and bp (1909), suggesting a long-standing tradition of industrial and scientific development. The presence of companies like Shell, bp, and Linde highlights a strong focus on industrial gases and energy transition initiatives.

#CompanyIndustryHeadquarters EmployeesFounded
1
Shellshell.com

A global energy company with a focus on cleaner energy solutions, serving millions of customers through retail service stations worldwide

Oil and Gas πŸ‡¬πŸ‡§ London 208,511 n/a
2
Unileverunilever.com

Global purpose-led business, creating well-loved brands that improve lives worldwide Encourages innovation, fosters growth, and believes in business as a force for good

Manufacturing πŸ‡¬πŸ‡§ Blackfriars 145,051 1872
3
Vodafonevodafone.com

Using technology to connect people globally, drive social change, and improve lives while emphasizing the importance of humanity and collaboration

Telecommunications πŸ‡¬πŸ‡§ London 142,740 1982
4
GSKgsk.com

Uniting science, technology, and talent to advance healthcare and disease prevention through collaborative innovation and community engagement.

Pharmaceutical Manufacturing πŸ‡¬πŸ‡§ London 92,092 n/a
5
bpbp.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 πŸ‡¬πŸ‡§ London 85,000 1909
6
Kingfisher plckingfisher.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 πŸ‡¬πŸ‡§ London 80,000 n/a
7
AstraZenecaastrazeneca.com

Pioneering healthcare transformation through the potential of science, impacting individuals, society, and the environment for a healthier future

Pharmaceutical Manufacturing πŸ‡¬πŸ‡§ Cambridge 79,513 n/a
8
BT Groupbt.com

A global communications services company connecting people through technology to address challenges like the pandemic, climate change, and cyber security

Telecommunications πŸ‡¬πŸ‡§ London 73,712 n/a
9
Sainsbury'ssainsburys.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 πŸ‡¬πŸ‡§ London 68,549 1869
10
Lindelinde.com

Global industrial gases and engineering company providing high-quality solutions and services for various industries, supporting sustainability, decarbonization, and planet protection

Chemical Manufacturing πŸ‡¬πŸ‡§ Woking 66,000 1879
11
BAE Systemsbaesystems.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 πŸ‡¬πŸ‡§ London 55,143 1999
12
FCA Fiat Chrysler Automobilesstellantis.com

A leading automaker and mobility provider now known as Stellantis, dedicated to creating innovative transportation solutions for the future

Motor Vehicle Manufacturing πŸ‡¬πŸ‡§ London 47,673 n/a
13
BATbat.com

Global consumer goods company focused on transitioning adult smokers to scientifically substantiated reduced-risk smokeless alternatives across multiple international markets.

Manufacturing πŸ‡¬πŸ‡§ London 46,311 1902
14
JLRjlr.com

A global company known for iconic vehicles, JLR offers exciting opportunities for growth with cutting-edge products and facilities worldwide

Motor Vehicle Manufacturing πŸ‡¬πŸ‡§ Coventry 43,815 1922
15
Reckittreckitt.com

Focus on providing high-quality hygiene, wellness, and nourishment products, aiming for global access and sustainable growth for healthier communities.

Manufacturing πŸ‡¬πŸ‡§ Slough 43,000 n/a
16
BBCbbc.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 πŸ‡¬πŸ‡§ London 42,697 1922
17
WPPwpp.com

Creative transformation company uses creativity to build better futures for people, planet, clients, and communities

Advertising Services πŸ‡¬πŸ‡§ London 41,040 n/a
18
Rio Tintoriotinto.com

Provides essential materials including iron ore, low carbon aluminum, copper, borates, and titanium for various global industries and daily life.

Mining πŸ‡¬πŸ‡§ London 40,794 1873
19
Diageodiageo.com

Global leader in premium drinks, with over 200 brands sold in 180 countries Committed to sustainability, innovation, and excellence worldwide

Beverage Manufacturing πŸ‡¬πŸ‡§ London 34,137 n/a
20
Rolls-Roycerolls-royce.com

Engineering excellence driving critical technologies for air, sea, and land, powering, protecting, and connecting people worldwide.

Industrial Machinery Manufacturing πŸ‡¬πŸ‡§ London 31,649 n/a
21
Intertekintertek.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 πŸ‡¬πŸ‡§ London 31,152 1885
22
UK Ministry of Defencegov.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 πŸ‡¬πŸ‡§ London 30,901 n/a
23
CHANELchanel.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 πŸ‡¬πŸ‡§ London 30,431 n/a
24
Nothingnothing.tech

London-based tech company building smartphones and audio equipment with iconic design and intuitive engineering as an alternative to established industry giants.

Technology, Information and Internet πŸ‡¬πŸ‡§ London 29,964 2020
25
Imperial Brands PLCimperialbrandsplc.com

An innovative global FMCG business with inclusive culture, focused on tobacco harm reduction, sustainability, and strong international brands

Manufacturing πŸ‡¬πŸ‡§ Bristol 29,000 n/a
26
Boots UKboots.jobs

Leading UK pharmacy-led retailer offering health, beauty products & care services through retail stores, digital platforms, and exclusive brands for over 170 years

Retail πŸ‡¬πŸ‡§ Nottingham 27,869 1849
27
Aruparup.com

A global collective of designers and consultants dedicated to sustainable development, collaborating with clients to shape a better world using technology and imagination

Design Services πŸ‡¬πŸ‡§ London 26,193 1946
28
Nextcareers.next.co.uk

Leading British retailer specializing in furniture production and technology development while fostering an innovative environment for warehouse teams and software engineering experts.

Retail πŸ‡¬πŸ‡§ Leicester 26,161 1982
29
TechnipFMCtechnipfmc.com

A leading technology provider in the energy industry, offering integrated projects and services to develop energy resources while prioritizing sustainability

Oil and Gas πŸ‡¬πŸ‡§ Newcastle upon Tyne 25,875 n/a
30
LSEGlseg.com

Provides financial indexing, benchmarking, analytic services, technology solutions, and integrated market infrastructure across data, capital markets, and post-trade.

Financial Services πŸ‡¬πŸ‡§ London 25,298 n/a
31
Kantarkantar.com

Global leader in marketing data and analytics with deep expertise, innovative technology, and insights to help clients understand people and drive growth worldwide

Market Research πŸ‡¬πŸ‡§ London 24,976 n/a
32
UCLucl.ac.uk

Leading multidisciplinary university in London, promoting academic excellence, inclusive education, and impactful research addressing real-world challenges.

Research Services πŸ‡¬πŸ‡§ London 24,678 n/a
33
University of Cambridgecam.ac.uk

A leading research university with 31 Colleges and over 150 departments, faculties, and schools, focused on excellence in education and research

Research Services πŸ‡¬πŸ‡§ Cambridge 20,304 n/a
34
The University of Manchestermanchester.ac.uk

A prestigious university known for teaching excellence, research innovation, and a history of world firsts, with a large global alumni community

Higher Education πŸ‡¬πŸ‡§ Manchester 20,294 1824
35
Smith+Nephewsmith-nephew.com

Design and manufacture medical technologies supporting healthcare professionals to restore patient health and mobility, enhancing performance and quality of life.

Medical Equipment Manufacturing πŸ‡¬πŸ‡§ Watford 19,222 1856
36
Entainentaingroup.com

A global sports betting and gaming entertainment group with over 25 brands, focused on revolutionizing the industry and promoting diversity

Entertainment Providers πŸ‡¬πŸ‡§ London 18,906 n/a
37
Haleonhaleon.com

The company is focused on improving everyday health through a human-centered approach They promote community guidelines for social media interactions #HelloHaleon

Consumer Services πŸ‡¬πŸ‡§ London 18,581 2022
38
Imperial College Londonimperial.ac.uk

Leading university specializing in science, medicine, engineering, and business, fostering interdisciplinary collaboration to advance knowledge and improve health.

Research Services πŸ‡¬πŸ‡§ London 18,233 1907
39
National Gridnationalgrid.com

Operate and develop electricity transmission and distribution networks, natural gas systems, and invest in clean energy infrastructure and technology ventures.

Utilities πŸ‡¬πŸ‡§ London 17,432 n/a
40
Babcock International Groupbabcockinternational.com

An international defence company providing product and service solutions to enhance customers' capabilities and assets, offering opportunities for professionals to grow

Defense and Space Manufacturing πŸ‡¬πŸ‡§ London 16,474 n/a
41
Sagesage.com

It provides businesses with user-friendly software and services, focusing on Payroll, HR, and Finance to enhance operational efficiency.

Software Development πŸ‡¬πŸ‡§ Newcastle upon Tyne 15,616 n/a
42
Hitachi Railhitachirail.com

Hitachi Rail provides innovative technology solutions for rail transportation, focusing on sustainability, digital transformation, and reducing carbon emissions globally

Rail Transportation πŸ‡¬πŸ‡§ London 15,527 n/a
43
Pearsonpearson.com

A global leader in learning, offering digital content, assessments, qualifications, and data to create vibrant and enriching learning experiences worldwide

Education πŸ‡¬πŸ‡§ London 13,596 n/a
44
Smollansmollan.com

Partners with brands and retailers, building solutions that drive growth and create opportunities at the point of purchase.

Retail πŸ‡¬πŸ‡§ London 13,502 1931
45
DS Smithdssmith.com

Innovative packaging solutions, paper products and recycling services using renewable resources to minimize environmental impact while optimizing supply chains for increased profitability.

Manufacturing πŸ‡¬πŸ‡§ London 13,157 n/a
46
Greencoregreencore.com

Leading UK convenience food manufacturer supplying supermarkets, retailers, and foodservice with a wide range of products Emphasizes quality, sustainability, and innovation

Food and Beverage Manufacturing πŸ‡¬πŸ‡§ Barlborough 13,000 1991
47
University of Nottinghamnottingham.ac.uk

A pioneering university with campuses in the UK, China, and Malaysia that aims to transform the lives of its 45,000 students

Higher Education πŸ‡¬πŸ‡§ Nottingham 12,740 1948
48
Finastrafinastra.com

Focusing on OPEN Collaboration & Finance, Finastra provides innovative technology solutions for global financial services, promoting financial inclusion and diversity

Financial Services πŸ‡¬πŸ‡§ Paddington 12,499 2017
49
INEOSineos.com

Global manufacturer of raw materials and energy producer striving to reduce carbon emissions, create sustainable products, and improve living standards worldwide

Chemical Manufacturing πŸ‡¬πŸ‡§ London 12,070 1998
50
Wisewise.com

Platform enabling individuals and businesses to hold multiple currencies, transfer money internationally, and spend abroad with low fees.

Financial Services πŸ‡¬πŸ‡§ London 11,769 2011

Want more companies than this list?

This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers.

Get more companies, free
51
Guy's and St Thomas'​ NHS Foundation Trustguysandstthomas.nhs.uk

Provides high-quality healthcare services, clinical excellence, research, and community care through multiple hospitals and partnerships in London.

Hospitals and Health Care πŸ‡¬πŸ‡§ London 11,655 n/a
52
Armarm.com

Designing foundational computing technology enabling advancements in cloud, automotive, IoT, metaverse, and autonomous systems worldwide.

Semiconductor Manufacturing πŸ‡¬πŸ‡§ Cambridge 11,505 n/a
53
The University of Sheffieldsheffield.ac.uk

A leading Russell Group university with a diverse community of students and staff, advancing research, partnerships, and global impact in various industries

Higher Education πŸ‡¬πŸ‡§ Sheffield 11,417 1905
54
Clarivateclarivate.com

A global information services provider connecting people and organizations to trusted intelligence in Academia & Government, Life Sciences & Healthcare, and Intellectual Property

Information Services πŸ‡¬πŸ‡§ London 11,385 n/a
55
JCBlinktr.ee

A leading engineering and manufacturing company globally, producing a wide range of reliable and innovative construction machinery and equipment

Machinery Manufacturing πŸ‡¬πŸ‡§ Rocester 11,003 1945
56
Deliveroodeliveroo.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 πŸ‡¬πŸ‡§ London 10,910 2013
57
University of Liverpoolliverpool.ac.uk

A renowned research and innovation center that attracts global students, experts, and partners, shaping lives and the world through collaborations

Higher Education πŸ‡¬πŸ‡§ Liverpool 10,897 n/a
58
University of Southamptonsouthampton.ac.uk

A prestigious university in southern England, ranked among the top 100 worldwide and a founding member of the Russell Group

Higher Education πŸ‡¬πŸ‡§ Southampton 10,786 1862
59
Hikma Pharmaceuticalshikma.com

Manufacturing and supplying over 800 generic, specialty, and branded pharmaceutical products to hospitals, physicians, and pharmacists globally.

Pharmaceutical Manufacturing πŸ‡¬πŸ‡§ London 10,626 1978
60
Newcastle Universityncl.ac.uk

Research-intensive university, world-class reputation in medicine, science, engineering, social sciences, humanities; providing excellent research-led teaching for high graduate employment rates.

Higher Education πŸ‡¬πŸ‡§ Newcastle upon Tyne 10,332 n/a
61
University of Warwickwarwick.ac.uk

Leading university with high academic and research standards, consistently making a global impact through its students, alumni, and staff.

Higher Education πŸ‡¬πŸ‡§ Coventry 10,327 1965
62
Barclays UKsearch.jobs.barclays

A company focused on helping individuals progress in their lives through financial services, digital innovation, career guidance, and customer-centric approach

Banking πŸ‡¬πŸ‡§ London 9,925 1690
63
Google DeepMinddeepmind.google

Advances artificial intelligence with breakthrough research. Solves complex problems like disease diagnosis, energy saving, and protein folding with safe, ethical AI.

Research Services πŸ‡¬πŸ‡§ London 9,665 2010
64
GKN Automotivegknautomotive.com

Development and supply of advanced driveline systems and electric drive technologies powering millions of electrified vehicles worldwide.

Motor Vehicle Manufacturing πŸ‡¬πŸ‡§ London 8,992 1759
65
GKN Aerospacegknaerospace.com

Designs and manufactures advanced aerospace systems and components for commercial and defense aircraft, focusing on sustainability and innovation.

Aviation and Aerospace Component Manufacturing πŸ‡¬πŸ‡§ Birmingham 8,600 1759
66
River Islandcareers.riverisland.com

Family-owned UK fashion brand with over 70 years on the high street, focusing on customer connection, innovation, wellbeing, and sustainability.

Retail πŸ‡¬πŸ‡§ London 8,600 1948
67
Johnson Mattheymatthey.com

development of sustainable technologies supporting energy, chemicals, and automotive sectors to decarbonise, reduce emissions, and enhance sustainability

Chemical Manufacturing πŸ‡¬πŸ‡§ London 8,592 1817
68
DNEGdneg.com

A global visual entertainment services company acclaimed for its award-winning visual effects work in feature films, television, and multiplatform content

Animation and Post-production πŸ‡¬πŸ‡§ Fitzrovia 8,179 1998
69
Pentairpentair.com

This company provides sustainable water solutions for residential, business, and industrial use globally, focusing on improving lives and the environment

Industrial Machinery Manufacturing πŸ‡¬πŸ‡§ London 7,711 1966
70
IMIimiplc.com

A global engineering company specializing in creating innovative solutions for fluid and motion control applications across various industries, focusing on collaboration and sustainability

Industrial Machinery Manufacturing πŸ‡¬πŸ‡§ Birmingham 7,637 n/a
71
AVEVAaveva.com

It provides industrial software solutions that enhance collaboration, optimize operations, and drive sustainability for enterprises across various sectors globally.

Software Development πŸ‡¬πŸ‡§ Cambridge 7,630 n/a
72
Coventry Universitycoventry.ac.uk

A global university focused on creating better futures through innovative teaching, impactful research, and strong industry partnerships worldwide

Higher Education πŸ‡¬πŸ‡§ Coventry 7,430 1843
73
The Access Grouptheaccessgroup.com

It provides business management software solutions for small and mid-sized organizations, enhancing productivity through innovative cloud and AI technologies.

Software Development πŸ‡¬πŸ‡§ Loughborough 7,368 n/a
74
Imperial College Healthcare NHS Trustimperial.nhs.uk

Delivers acute and specialist medical care, conducts biomedical research, and provides clinical education for healthcare professionals across five London hospital sites.

Hospitals and Health Care πŸ‡¬πŸ‡§ London 7,248 1823
75
Manchester University NHS Foundation Trustmft.nhs.uk

A large UK acute Trust with nine hospitals providing comprehensive general to highly specialized services to 750,000 people in Manchester and Trafford

Hospitals and Health Care πŸ‡¬πŸ‡§ Manchester 7,150 n/a
76
Leeds Teaching Hospitals NHS Trustleedsth.nhs.uk

One of Europe's largest acute hospital trusts in Leeds, providing healthcare, specialist services, training, research, and pioneering treatments with 20,000 employees

Hospitals and Health Care πŸ‡¬πŸ‡§ Leeds 6,812 1948
77
University of Bathbath.ac.uk

A leading UK research university dedicated to making a positive impact on the world through innovation, collaboration with industry, and quality education Located in Bath, UK

Higher Education πŸ‡¬πŸ‡§ Bath 6,784 1966
78
Clarksclarks.com

A historic shoe company founded in 1825, known for innovative footwear designs that have evolved with fashion trends worldwide

Retail πŸ‡¬πŸ‡§ Street 6,739 1825
79
bet365bet365careers.com

A global leader in online gambling, offering sports betting, in-play betting, live streaming, and a range of online casino games

Gambling Facilities and Casinos πŸ‡¬πŸ‡§ Stoke-on-Trent 6,713 2000
80
Sheffield Hallam Universityshu.ac.uk

Higher education institution focusing on student development, impactful research, and strong local and international partnerships for global solutions.

Higher Education πŸ‡¬πŸ‡§ Sheffield 6,692 1843
81
The University of Salfordsalford.ac.uk

Ambitious university with 20,000 students driving local economy and transforming individuals through teaching, research, innovation, and engagement in various fields

Higher Education πŸ‡¬πŸ‡§ Salford 5,864 1967
82
Element Materials Technologyelement.com

Global provider of testing, inspection, and certification services ensuring product safety, regulatory compliance, and sustainability across advanced industrial supply chains.

Manufacturing πŸ‡¬πŸ‡§ London 5,829 2011
83
University of Plymouthplymouth.ac.uk

Modern university with dynamic culture, high student satisfaction, impactful research, innovation, and commitment to global societal and educational advancement.

Higher Education πŸ‡¬πŸ‡§ Plymouth 5,745 1862
84
University College London Hospitals NHS Foundation Trustuclh.nhs.uk

Provides acute and specialist medical services across six London hospitals, focusing on patient care, education, and biomedical research.

Hospitals and Health Care πŸ‡¬πŸ‡§ London 5,737 n/a
85
Ocado Groupocadogroup.com

Global technology company specializing in online grocery and logistics platforms, enabling partners to excel in ecommerce fulfillment and automation across various industries.

Software Development πŸ‡¬πŸ‡§ Hatfield 5,698 n/a
86
EVevcam.com

Specializing in well diagnosis, this company provides visual information to help operators understand and resolve wellbore issues, reducing risk and increasing operational performance

Energy Technology πŸ‡¬πŸ‡§ Norwich 5,696 2000
87
Daviesdavies-group.com

Specialist professional services and technology firm providing risk management, business process optimization, and digital transformation solutions to insurance, regulated, and global businesses

Insurance πŸ‡¬πŸ‡§ London 5,693 n/a
88
Anglia Ruskin Universityaru.ac.uk

Innovative global university with campuses in UK cities, offering top-ranked courses, industry partnerships, and world-leading research opportunities for students

Higher Education πŸ‡¬πŸ‡§ Cambridge 5,648 1858
89
IONiongroup.com

Innovative company providing trading and workflow automation software to financial institutions, corporations, and governments, empowering decision-making and accelerating processes

Software Development πŸ‡¬πŸ‡§ London 5,591 1998
90
University Hospitals Birmingham NHS Foundation Trustuhb.nhs.uk

Operates large teaching hospitals, providing comprehensive medical care, specialist treatments, and trauma services for millions regionally and internationally, with a focus on staff development.

Hospitals and Health Care πŸ‡¬πŸ‡§ Birmingham 5,525 n/a
91
QinetiQqinetiq.com

Integrated global defence and security company focused on mission-led innovation, testing technologies, and enabling customers to deploy enhanced capabilities for protecting lives.

Defense and Space Manufacturing πŸ‡¬πŸ‡§ Farnborough 5,512 n/a
92
University of Surreysurrey.ac.uk

Provides diverse undergraduate courses, student support, clubs, and safe accommodation in a vibrant campus environment near London.

Higher Education πŸ‡¬πŸ‡§ Guildford 5,511 1891
93
Sophossophos.com

A global cybersecurity leader offering advanced solutions, managed services, and a broad portfolio of technologies to protect organizations from cyberattacks worldwide

Software Development πŸ‡¬πŸ‡§ Abingdon 5,498 1985
94
PA Consultingpaconsulting.com

Global teams of strategists, technologists, and experts deliver innovative solutions across industries to drive transformation and lasting client success.

Business Consulting and Services πŸ‡¬πŸ‡§ London 5,470 n/a
95
University of Greenwichgre.ac.uk

A multi-faculty university in London and Kent offering high-quality teaching, research, and enterprise opportunities with a focus on student satisfaction

Higher Education πŸ‡¬πŸ‡§ Greenwich 5,450 1970
96
Cancer Research UK (CRUK)cancerresearchuk.org

Dedicated to cancer research, prevention, diagnosis, and treatment, funded by public donations to improve survival and quality of life.

Non-profit Organizations πŸ‡¬πŸ‡§ London 5,433 n/a
97
SS&C GlobeOpssctech.com

Global provider of cloud-based fund services and technology for hedge funds, private equity, and asset managers, offering outsourcing support for operational efficiency and risk reduction

Financial Services πŸ‡¬πŸ‡§ London 5,416 2000
98
Octopus Energyoctopus.energy

providing affordable, transparent renewable energy solutions with innovative technology and exceptional customer service across multiple countries and sectors

Utilities πŸ‡¬πŸ‡§ London 5,415 n/a
99
Oxford University Hospitals NHS Foundation Trustouh.nhs.uk

A world-renowned NHS teaching trust with four hospitals in Oxford, providing clinical services, specialist care, medical education, training, and research

Hospitals and Health Care πŸ‡¬πŸ‡§ Oxford 5,379 n/a
100
University of Sussexsussex.ac.uk

University offering diverse, research-informed teaching and learning programs with a focus on creativity, intellectual challenge, and inclusivity.

Higher Education πŸ‡¬πŸ‡§ Brighton 5,299 1961

Turn this list into pipeline

Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.

Build your own list, free

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 England

The same list elsewhere in United Kingdom

The same list elsewhere