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The 28 largest public sector organisations in Wales

Tamtam tracks 28 public sector organisations headquartered in Wales. This list ranks all of them by number of employees on LinkedIn, led by Cardiff and Vale University Health Board, Hywel Dda University Health Board and Prifysgol Cymru Y Drindod Dewi Sant / University of Wales Trinity Saint David. Their median headcount is 600. Half of them were founded in 2009 or later. The most common headquarters are Cardiff (10).

πŸ‡¬πŸ‡§ Wales28 companiesUpdated Nov 11, 2026

This selection of public sector organizations in Wales is dominated by healthcare and education providers. Notable entities include Cardiff and Vale University Health Board, a major healthcare provider in Cardiff, and Hywel Dda University Health Board, which serves West Wales. Prifysgol Cymru Y Drindod Dewi Sant / University of Wales Trinity Saint David is a long-established university. Transport for Wales manages rail services, and The Royal Mint produces coins and gifts. Most of these organizations are large public bodies serving broad community needs.

A clear pattern is the prevalence of health boards, indicating a strong public healthcare infrastructure. Many organizations, such as Public Health Wales and Digital Health and Care Wales, are headquartered in Cardiff, suggesting a concentration of administrative and strategic functions in the capital.

#CompanyIndustryHeadquarters EmployeesFounded
1
Cardiff and Vale University Health Boardcavuhb.nhs.wales

Healthcare provider offering a wide range of services to a local population of 500,000, with over 100 specialist services for the region and beyond

Hospitals and Health Care πŸ‡¬πŸ‡§ Cardiff 3,110 n/a
2
Hywel Dda University Health Boardhduhb.nhs.wales

Healthcare provider in West Wales offering a range of services including acute, primary, community, mental health, and learning disabilities for the local population Contact for recruiting queries

Hospitals and Health Care πŸ‡¬πŸ‡§ Carmarthen 2,421 n/a
3
Prifysgol Cymru Y Drindod Dewi Sant / University of Wales Trinity Saint Daviduwtsd.ac.uk

A prestigious university in Wales, offering a dual-sector approach to education with a focus on benefiting learners, employers, and communities

Higher Education πŸ‡¬πŸ‡§ Carmarthen 1,960 1822
4
Cwm Taf Morgannwg University Health Boardctmuhb.nhs.wales

Provider of primary, secondary, and community health services to over 450,000 people in Wales, emphasizing respect, teamwork, and continuous improvement

Hospitals and Health Care πŸ‡¬πŸ‡§ Abercynon 1,882 n/a
5
Transport for Walestfw.wales

Management and operation of passenger rail services across Wales, focusing on improving connectivity, reliability, and customer experience.

Rail Transportation πŸ‡¬πŸ‡§ Pontypridd 1,870 n/a
6
Welsh Ambulance Services University NHS Trustambulance.nhs.wales

A Wales-based healthcare organization providing emergency medical services, telephone healthcare, advice, information via NHS 111 Wales, and non-emergency patient transport

Hospitals and Health Care πŸ‡¬πŸ‡§ St Asaph 1,677 n/a
7
Public Health Walespublichealthwales.wales.nhs.uk

A national NHS organization in Wales working to protect and improve health, reduce inequalities, and provide public health services and knowledge

Hospitals and Health Care πŸ‡¬πŸ‡§ Cardiff 1,298 2009
8
Cyfoeth Naturiol Cymru / Natural Resources Walesnaturalresources.wales

Sustainable management and improvement of natural resources in Wales for current and future use

Environmental Services πŸ‡¬πŸ‡§ Cardiff 1,257 2013
9
Gower College Swanseagcs.ac.uk

A large further education college in Swansea offering a wide range of full-time and part-time courses, including A Levels, vocational subjects, higher education, and apprenticeships

Education πŸ‡¬πŸ‡§ Swansea 752 2010
10
Gwent Policegwent.police.uk

Providing trusted, fair, and professional policing services to protect and reassure residents across multiple communities in Gwent area.

Public Safety πŸ‡¬πŸ‡§ CwmbrΓ’n 745 1967
11
Digital Health and Care Walesdhcw.nhs.wales

A national organization in Wales delivering digital health services to support doctors, nurses, and clinical professionals in providing specialist care

IT Services and IT Consulting πŸ‡¬πŸ‡§ Cardiff 739 2021
12
Coleg y Cymoeddlinktr.ee

Providing further education to over 9,000 learners across multiple sites in Caerphilly County and Rhondda Cynon Taff.

Higher Education πŸ‡¬πŸ‡§ Cardiff 663 2013
13
The Royal Mintroyalmint.com

Leading British maker of original coin collections, gifts, and currency solutions, offering eye-opening experiences, investment opportunities, and special moment celebrations

Consumer Goods πŸ‡¬πŸ‡§ Llantrisant 627 n/a
14
South Wales Fire and Rescue Servicesouthwales-fire.gov.uk

Collaborative fire and rescue team providing protection and safety for South Wales, focusing on innovation and excellence for future challenges.

Public Safety πŸ‡¬πŸ‡§ Llantrisant 600 1996

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15
NHS Wales Shared Services Partnershipnwssp.nhs.wales

The company provides a comprehensive range of high-quality support functions and services for NHS Wales, emphasizing customer-focused assistance

Hospitals and Health Care πŸ‡¬πŸ‡§ Cardiff 540 2011
16
Heddlu Dyfed-Powys Policedyfed-powys.police.uk

A police service in Wales safeguarding residents and tourists in the counties of Carmarthenshire, Ceredigion, Pembrokeshire, and Powys

Law Enforcement πŸ‡¬πŸ‡§ Carmarthen 540 1968
17
Coleg Penybont | Bridgend Collegebridgend.ac.uk

provides education and training for school leavers and mature students, recognized as a top inclusive and best workplace in UK

Education Administration Programs πŸ‡¬πŸ‡§ Bridgend 516 1923
18
Powys Teaching Health Board / Bwrdd Iechyd Addysgu Powyspthb.nhs.wales

A healthcare organization in Wales, providing NHS services to residents of Powys county

Hospitals and Health Care πŸ‡¬πŸ‡§ Bronllys 516 1948
19
BCUHB Digital, Data and Technologybcuhb.nhs.wales

Delivering innovative informatics services to clinicians and stakeholders, creating a virtual patient-focused environment for safe, high-quality care within the Health Board

Hospitals and Health Care πŸ‡¬πŸ‡§ Bangor 491 n/a
20
Careers Walescareerswales.gov.wales

A Welsh Government-funded organization providing free careers information and support for individuals, as well as offering services for employers and educational partnerships

Information Services πŸ‡¬πŸ‡§ Cardiff 466 2013
21
Amgueddfa Cymru – Museum Walesmuseum.wales

A national museum organization in Wales, providing free access to museums showcasing local industries, treasures, and everyday life stories Join, volunteer, or donate to support

Museums, Historical Sites, and Zoos πŸ‡¬πŸ‡§ Cardiff/Caerdydd 440 1907
22
GrΕ΅p Colegau NPTC Group of Collegesnptcgroup.ac.uk

A leading education provider in Wales offering a wide range of full-time, part-time, and higher education courses across 9 sites #BeYourFuture

Education πŸ‡¬πŸ‡§ Neath 434 1931
23
Health Education and Improvement Wales (HEIW)/Addysg a Gwella Iechyd Cymru (AaGIC)heiw.nhs.wales

A leading organization in NHS Wales, specializing in education, training, and development of healthcare workforce to ensure high-quality care for the people of Wales

Hospitals and Health Care πŸ‡¬πŸ‡§ Nantgarw 421 2018
24
North Wales Fire and Rescue Servicenorthwalesfire.gov.wales

A fire and rescue service in North Wales protecting over 678,000 residents, numerous tourists, and properties through 44 fire stations Employing nearly 1,000 staff

Public Safety πŸ‡¬πŸ‡§ St Asaph 330 n/a
25
Transport for Wales Rail/ Trafnidiaeth Cymru Gwasanaethau TrΓͺntfwrail.wales

The company is dedicated to implementing the Welsh Government's vision of a high-quality, safe, integrated, affordable, and accessible transport network in Wales

Truck Transportation πŸ‡¬πŸ‡§ Cardiff 239 2018
26
Welsh Blood Servicewelsh-blood.org.uk

Organizes blood collection, testing, processing, and distribution to Welsh hospitals, relying on voluntary donors to maintain life-saving supplies

Hospitals and Health Care πŸ‡¬πŸ‡§ Talbot Green 222 n/a
27
Sport Walessport.wales

The national organization in Wales promotes sport and physical activity to improve health, build communities, develop skills, and support athletes

Spectator Sports πŸ‡¬πŸ‡§ Cardiff 202 n/a
28
Cardiff Buscardiffbus.com

Established in 1902, this company is the top bus operator in Cardiff, offering services within the city, Vale of Glamorgan, and to/from Newport

Truck Transportation πŸ‡¬πŸ‡§ Cardiff 196 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.

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