
Withybush CT Scanner
Installation of a CT scanner heating system.

Ggt. Thomas & Son Ltd · Company 04190827 · Trading heritage since 1985
Active, accounts up to date·subcontractor & consultant·Head office Haverfordwest
Founded in 1985 by Gerald Thomas, GGT Thomas and Son Ltd is a Pembrokeshire family business with over 30 years of experience in central heating and plumbing. Initially starting with three employees, the company has grown to over 20 staff, serving domestic, commercial, and industrial clients across West Wales. They specialise in the installation, servicing, and repair of central heating systems, including complex installations like underfloor heating, air source and ground source heat pumps, and biomass boilers.
The company works with homeowners and building contractors, offering expertise in system design and calculation to ensure energy efficiency and cost-effectiveness. For commercial and industrial projects, they manage all aspects from risk assessments and method statements to site setup and material sourcing, ensuring minimal disruption to businesses. They pride themselves on their adaptability, teamwork, and ability to value-engineer systems to meet budget requirements while maintaining quality.
Their engineers are CRB checked for sensitive environments, and the company is REHAU registered and certified for gas and oil systems.

Installation of a CT scanner heating system.

Installation of underfloor heating in a winter garden.

Heating system for Valero Fire Hall.

Heating system for Chevron Stores.

Installation of a plant room heating system at Cleddau Reach School.
Local Health Board, Milford Haven Port Authority, Pembrokeshire County Council, Police Service.
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GGT Thomas & Son Ltd offers commercial, industrial, and domestic central heating and plumbing services across West Wales, specialising in installation, servicing, and repairs. Their listed services include Heating & ventilation, Plumbing and M&E contracting.
Ggt. Thomas & Son Ltd is registered at The Haggard Llangwm Hill, Llangwm, Haverfordwest, SA62 4NG, in Wales.
Ggt. Thomas & Son Ltd states that it works across West Wales, Pembrokeshire, Ceredigion and Carmarthenshire.
Accounts filed for the year to 2025 report 18 employees, which places the company in the 10-49 employees band.
Ggt. Thomas & Son Ltd does not disclose turnover: UK small-company accounts are not required to. Based on headcount and trade debtors in its filed accounts, turnover is likely to fall between £820k and £2.2m. This is an estimate, not a filed figure.
Companies House lists Ggt. Thomas & Son Ltd as active, with accounts most recently made up to 2025-03-31.
Ggt. Thomas & Son Ltd displays REHAU registered, Gas Safe and Oil on its website.
Ggt. Thomas & Son Ltd works in Residential, Commercial, Industrial, Healthcare, Education and Public.
Ggt. Thomas & Son Ltd was incorporated on 2001-03-30, though the company says it has traded since 1985.
Track budgets, committed costs, invoices and profitability in one place, so cost issues show up before they turn into margin surprises.