Temporary Electrical & Plumbing Installations
Welcome to HM Bristol Ltd / HM Cymru, offering specialist site temporary power and plumbing installations to the construction industry.
From the head offices in Bristol and South Wales (HM Cymru) we offer a comprehensive, bespoke design and installation service for your specialised temporary power and plumbing installation needs.
HM Bristol Ltd is able to cater to large and small projects and can provide all you need to get your development going.
With experience in construction contracts for the Country’s largest retailers to schools and shopping outlets, HM Bristol Ltd have the experience necessary to ensure your construction projects successful completion.

Covering the South West of England and Wales, HM can also travel further afield, operating throughout the Midlands and the South East.
Our Services
HM offer a comprehensive, bespoke design and installation service that provides specialised power and plumbing installations to the construction industry.

Site lighting

Electrical and water metering systems

Site alarm systems

Battery bank charging points
We prepare temporary electrical and plumbing schemes including:
- Assessing electrical loading requirements
- Assessing possible connection costs for the local Supply Authorities
- Assessing running costs and routine maintenance
- Testing and adaptation costs.
- Mains distribution (Single Phase & Three Phase LV Systems)
- Site Lighting
- Electrical and Water metering systems
- Site Alarm systems
- Site evacuation Alarms
- Battery Bank charging points
- Palm reader Site entry systems
Our quotations are fully itemised with a detailed summary. Contact us today for more information.
Our Projects
Here you can find just a small sample of Site Temporary Electrical & Plumbing Projects designed and implemented by HM Bristol and HM Cymru.

Ysgol Bro Dinefwr
Llandeilo

Colston Avenue
Bristol



Quote Request
Health and Safety
HM Bristol Ltd/ HM Cymru wholeheartedly support the UKCG initiative for a fully trained workforce and are 100% compliant, all of our electricians have obtained the Construction Site Supervisor’s Safety Certificate (CSSSC). HM Bristol/HM Cymru are SMAS Accredited Contractors and are also accredited with Builders Profile and are registered with Construction Line.
Our external Health & Safety advisors are www.thsp.co.uk
Our installation teams of 20+ engineers operate from fully equipped vans complete with satellite tracking for rapid response. All staff are fully conversant with the Safety Standards as laid down by the British Standards Code of Practice 1017, and have received both Vocational and Site Safety awareness training. All engineers are in possession of ECS cards (affiliated to the CSCS system).
All our Electrical installations are carried out in accordance with the I.E.E. Regulations, BS7671 and H.S.E. Code of practice. On completion of site testing our Test Certificates are compiled using Castline Systems bespoke “Form-fill” software (approved by the I.E.E.). The certificates can be transmitted electronically via email directly to the Client for inclusion in the Site Safety File.
HM Bristol Ltd/HM Cymru is an enrolled member of the National Inspection Council for Electrical Installation Contractors (NICEIC).
HM Bristol Ltd
Company No.05368639
HM Cymru is a trading name of
HM Bristol Ltd.
Unit 1, Sampson Business Park, Berwick Lane, Hallen, Bristol, BS10 7RS
0117 9500904
richard@hmbristol.co.uk
Opening Hours
Monday – Friday 8.00-17.00
Saturday – Sunday Closed





