| # | Company | Employees |
|---|---|---|
| 1 |
NatWest Groupnatwestgroup.com
Support UK businesses by removing barriers, promoting learning, enhancing financial confidence, and championing climate solutions for sustainable community growth. |
43,833 |
| 2 |
RBSnatwestgroup.com
Announcement of rebranding from RBS to NatWest Group, encouraging followers to transition to the new company page for updates. |
18,457 |
| 3 | 12,865 | |
| 4 |
NHS Greater Glasgow and Clydenhsggc.scot
Provider of NHS health care services serving 12 million people in Glasgow and half of Scotland's population, with 25 hospitals and a 拢842m investment program |
7,466 |
| 5 |
NHS Lothiannhslothian.scot
Provider of primary, community-based, and acute hospital services in Edinburgh and surrounding areas, offering comprehensive healthcare to local populations |
7,007 |
| 6 |
Stagecoach Group Limitedstagecoachbus.com
Market leader in providing greener, smarter travel through bus, coach, and tram operations Committed to safety, service, integrity, innovation, and partnership |
5,660 |
| 7 |
Aberdeenaberdeenplc.com
Providing wealth and investment services focused on helping clients plan, manage portfolios, and navigate financial futures with insight. |
5,527 |
| 8 |
ScottishPowerscottishpower.com
Leading renewable energy generation, managing electricity grids, and supporting homes and businesses in transitioning to a low carbon future. |
5,295 |
| 9 |
NHS Grampiannhsgrampian.org
Providing comprehensive healthcare services and public health management for half a million people across urban and rural Grampian communities. |
4,588 |
| 10 |
Virgin Moneyvirginmoneyukplc.com
A member of the Virgin Group, this company aims to create positive customer experiences by offering innovative banking products and services |
4,512 |
| 11 |
Royal Bank of Scotland Businessrbs.co.uk
Provide Scottish businesses with expert insights, analysis, and quick account support through webchat to help them grow effectively. |
3,622 |
| 12 |
NHS National Services Scotlandnss.nhs.scot
This company supports Scotland's health by providing shared services and expertise to help NHS Boards work more efficiently and save money |
3,190 |
| 13 |
Scottish Waterscottishwater.co.uk
Providing high-quality drinking water and safely returning wastewater to the environment across communities throughout Scotland every day. |
3,115 |
| 14 |
First Busfirstbus.co.uk
One of the UK鈥檚 largest bus operators, leading the transition to a low-carbon future with innovative technologies and a commitment to zero-emission buses |
2,648 |
| 15 |
Tesco Banktescobank.com
Providing banking products and services through a partnership with Barclays, focusing on customer value, loyalty rewards, and excellent service. |
2,592 |
| 16 |
NHS Fifenhsfife.org
Delivering healthcare services to 370,000 patients with a team of approximately 8,500 staff members in Fife |
2,261 |
| 17 |
SSEN Transmissionssen-transmission.co.uk
Developing and operating a vast network to transport renewable energy across challenging terrains, supporting net zero emissions targets. |
2,074 |
| 18 |
Scottish Ambulance Servicescottishambulance.com
This company operates the frontline emergency ambulance service for Scotland, responding to 18 million calls annually and serving over 5 million people |
2,072 |
| 19 |
SSE Renewablessserenewables.com
Development and operation of onshore and offshore wind farms, hydro power, and pumped storage to produce renewable electricity. |
1,984 |
| 20 |
SP Energy Networksspenergynetworks.co.uk
Connects and distributes electricity to 3.5 million UK homes and businesses, maintaining network infrastructure and connecting renewable energy sources across various regions. |
1,952 |
| 21 |
FirstGroup plcfirstgroupplc.com
Leading UK bus and rail operator providing essential public transport services across major cities and regions, connecting communities daily. |
1,917 |
| 22 |
Scottish Fire and Rescue Servicefirescotland.gov.uk
Respond to emergencies including fires, accidents, and rescues while promoting fire safety and supported by skilled non-uniformed staff. |
1,744 |
| 23 |
Scottish Widowsscottishwidows.co.uk
Providing financial advisers with market-leading products, online tools, calculators, and dedicated support to build and protect client relationships. |
1,739 |
| 24 |
NHS Ayrshire & Arrannhsaaa.net
The company provides high quality, safe, and person-centered health services, values caring, safety, and respect They offer trusted health information and advice |
1,692 |
| 25 |
ScotRailscotrail.co.uk
The company is focused on delivering millions of customer journeys annually, through investing in new trains, stations, and infrastructure for improved services |
1,569 |
| 26 |
Scottish and Southern Electricity Networksssen.co.uk
The company maintains electricity networks serving over 39 million homes and businesses in central southern England and northern Scotland, prioritizing safety and reliability |
1,473 |
| 27 | 1,402 | |
| 28 |
Resolution Liferesolutionlife.com
Global life insurance group specializing in reinsurance, acquiring, and managing portfolios of in-force life insurance policies worldwide. |
1,342 |
| 29 |
Bank of Scotlandbankofscotland.co.uk
Scotland's oldest bank with nearly 300 branches serving over 28 million customers, offering 24/7 phone and online services |
1,229 |
| 30 |
Sainsbury's Banksainsburysbank.co.uk
Established in 1997, we offer a range of financial products including credit cards, savings, loans, insurance, and travel money, emphasizing loyalty and growth opportunities for both customers and colleagues |
1,113 |
| 31 |
Scottish Prison Servicesps.gov.uk
The company manages publicly and privately operated prisons, with a focus on unlocking potential and transforming lives through career opportunities |
1,105 |
| 32 |
Department of Transport and Major Infrastructuretransport.wa.gov.au
Strategic transport policy, planning, investment across roads, rail, ports, aviation, cycling, and community services supporting Western Australia's mobility and safety. |
1,030 |
| 33 |
Altera Infrastructurealterainfra.com
A leading global energy infrastructure services group with a focus on owning and operating critical assets in offshore oil regions |
990 |
| 34 |
Clydesdale Bankuk.virginmoney.com
Provides retail, business, private, and corporate banking products and services through extensive branch and banking centre network across the UK. |
926 |
| 35 |
EnQuestenquest.com
An independent oil and gas company focused on developing and producing oil fields, with a strong presence in the UK North Sea and other basins |
887 |
| 36 |
CalMac Ferries Limitedcalmac.co.uk
An award-winning ferry operator serving 30 island destinations along the west coast of Scotland, carrying 5 million passengers annually |
798 |
| 37 |
Ithaca Energyithacaenergy.com
A leading oil and gas operator in the UK, committed to meeting energy needs sustainably while maximizing value through responsible production |
781 |
| 38 |
NHS DUMFRIES & GALLOWAYnhsdg.scot.nhs.uk
Regional health board providing health and care services to 140,000 residents in Dumfries & Galloway, with a committed workforce of 4,500 staff |
736 |
| 39 |
NEO NEXT+ Energyneweuropeanoffshore.com
Independent North Sea operator focusing on value creation with high ESG standards, sustainable assets, organic production growth, asset life extensions, and acquisitions |
713 |
| 40 |
Last Milelastmile.co.uk
Designing, building, and operating essential utilities infrastructure in Great Britain to provide access to heat, power, water, and wastewater services every day |
689 |
| 41 |
INEOS Grangemouthineos.com
An industrial site in Grangemouth with a crude oil refinery, petrochemical plants, and extensive infrastructure offering diverse career opportunities in engineering |
639 |
| 42 |
Lothian Buseslothianbuses.com
The company is the UK's largest municipal bus company, owned by local councils, with over 2,500 employees, 1,700 of whom are drivers |
609 |
| 43 |
NHS Golden Jubileenhsgoldenjubilee.co.uk
An institution in NHS Scotland delivering healthcare and research services through collaboration, with a focus on sustainable delivery and education |
588 |
| 44 |
Edinburgh Airportedinburghairport.com
Scotland's busiest airport serving 15.8 million passengers, connecting 151 destinations, supporting 23,000 jobs, and promoting inclusive growth. |
576 |
| 45 |
Forth Ports Limitedforthports.co.uk
A leading UK port group offering efficient supply chain services, supporting diverse industries, investing in future projects, and empowering local and national economies |
565 |
| 46 |
Loganair Limitedloganair.co.uk
Airlines specializing in scheduled flights around the UK, Norway, Denmark, Ireland, and Isle of Man, operated by a network of employees |
552 |
| 47 |
Scottish National Blood Transfusion Servicescotblood.co.uk
A hospital & health care company in Scotland specializing in blood transfusion services, located in Edinburgh |
507 |
| 48 |
McGill's Bus Groupmcgillsbuses.co.uk
A pioneering bus company in Britain with a focus on fleet decarbonisation, offering a wide range of bus services, tours, coach touring, and private hire |
295 |
| 49 |
Standard Life UKstandardlife.com
A trusted provider of financial products and services, helping millions of customers make informed decisions to secure their future wealth |
176 |
| 50 |
John G Russell (Transport) Ltd (Russell Group)johngrussell.co.uk
Leading transport and logistics provider offering warehousing, distribution, and supply chain management across UK and Europe with extensive resources. |
139 |
| 51 |
Scottish Building Societyscottishbs.co.uk
Providing home loans and savings products to help people buy homes and save money, with a long-standing history since 1848. |
97 |
| 52 |
Renewco Powerrenewcopower.com
Renewco Power specializes in developing large-scale solar, wind, storage, and green hydrogen projects in Europe and the US Led by experienced executives |
46 |
| 53 |
GreenPower Developments Ltd.greenpowerinternational.com
Leading independent renewable energy developer specializing in wind turbines, solar, and hydroelectric projects, from single installations to utility-scale assets |
22 |
| 54 |
Moray Eastmorayoffshore.com
A joint venture developing a 950 MW offshore wind project in Scotland, aiming to provide electricity to 950,000 UK homes and 40% of Scotland's electricity needs |
13 |
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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 Oct 24, 2026.
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- Hospitality companies in Scotland 67
- Manufacturers in Scotland 61
- Oil and Gas companies in Scotland 60
- Energy companies in Scotland 58
- Food and Beverage Manufacturing companies in Scotland 57
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- Public sector organisations in Scotland 46
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