Welcome

R&M Williams

For over half a century we have been a leading partner in the design and delivery of innovative and complex multi-disciplinary construction and maintenance services for public and private sector clients across Wales and the West of England.

Latest News
Perfect Score: R&M Williams Achieves Maximum Considerate Constructors Rating at Croft Street
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R&M Williams Crowned Master Builder of the Year 2025
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R&M Williams Honoured with Silver Award for Supporting the Armed Forces

Est. 1965

Maintaining Building Excellence

Over the last 55+ years, we have seen an incredible amount of change in the construction industry. The journey from a small family business to a thriving private limited company with hundreds of permanent employees was only possible by adapting our ways of working to current best practice.

Mark Williams

Chairman

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Permanent Employees
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Ongoing Apprenticeships
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Active Framework Contracts
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Active Projects
Sectors

Our Specialisms

From building maintenance to cutting-edge retrofit decarbonisation programmes.

Fire Remediation
Retrofit Decarbonation
Maintenance
Blue Light Services
Retail Fit-Out
Education
Healthcare
Heritage
New Build
Construction
Projects

Discover our projects

Innovative, collaborative and award-winning success stories

Client: Cynon Taf Community Housing Group

Project Value: £995,000

Retrofit Decarbonation

ORP 3 for Cynon Taf Community Housing Group – Optimised Retrofit Programme for domestic housing association properties

Client: Swansea County Council

Project Value: £15m, NEC3 Option C

Listed Restorations/Heritage/Refurbishment

Palace Theatre Grade II Listed building restoration

Client: NEC3 Option A

Project Value: £750,000

Blue Light Services/Healthcare/Refurbishment

Morriston Hospital Refurbishment and Fit-out of new Gamma Scanner area

Client: NEC3 Option A

Project Value: £5.8m

Listed Restorations/Heritage/Refurbishment

Pembroke Port Grade II listed Hangar annex restoration

Client: Package 1 Workshops: NEC3 A, Package 2 Roof & Façade JCT D&B, Package 3 Teaching Areas NEC3 C, Package 4 Birt Acres Lecture Theatre NEC3 A for Cardiff University

Project Value: Package 1 £750k; Package 2 £4m; Package 3 £7m; Package 4 £2m

Listed Restorations/Education/Heritage/Refurbishment

Bute Building School of Architecture Grade II Listed building reroofing and remodeling

Client: GC for Neath Port Talbot Council

Project Value: £73,300

Educational/Education/Refurbishment

Castell Nedd Primary School toilet refurbishment

Client: JCT Design & Build for Trivallis

Project Value: £1.6 m

Residential/Maintenance/Construction/Refurbishment

Crown Avenue Redevelopment

Client: JCT Design and Build for Newport City Homes

Project Value: £4.8M

Fire Remediation/Retrofit Decarbonation

Newport City Homes – Towers

Client: JCT Design and Build for Coastal Housing Group

Project Value: £5.5M

Fire Remediation/Retrofit Decarbonation

The Strand & Mews Replacement Cladding

Client: JCT Design & Build for Bristol Airport Development Ltd

Project Value: £4.3m

Blue Light Services/New Build/Construction

Bristol Airport Fire station

Client: JCT Design & Build for Bristol Airport Development Ltd

Project Value: £8m

Aviation/New Build/Construction

Bristol Airport Admin Building (Lulsgate House)

Client: JCT Design & Build for Bristol Airport Development Ltd

Project Value: £5M

Aviation/New Build/Construction

Bristol Airport Aviation House

Client: JCT Design & Build for Coastal Housing Group

Project Value: £3.2m

Fire Remediation/Retail Fit-Out/New Build/Construction

Creative Cluster

Client: JCT Design & Build for Coastal Housing Group

Project Value: £4.5m

Fire Remediation/Mixed use - Residential & Commercial/Retail Fit-Out/New Build/Construction

Urban Village Swansea – High Street

Our ongoing framework partners

swansea council
cardiff univeristy
carmarthern council
pembrokeshire council
powys council
linc logo
south wales rescure ogo
rct council
hywel dda logo
swwrcf logo
sbuhb
abuhb
police & crime comm. sw
trivallis
pobl
sewscap4 logo website
mwwfrs
fusion 21 supplier
nhmf logo
pagabo logo updated 1
cardiff council logo bigger

Our Offices

Based in 4 locations.

View Details
swansea
Neath
cardiff
Cardiff
llanelli
Llanelli
milford haven
Pembroke

Realising Potential

Investment In The Future

We believe in investing in people’s futures and careers, to help our staff and operatives meet their full potential.