In the 30 years plus since RDM’s inception, we have worked on projects covering just about every sector and industry imaginable. From very large scale, cutting edge operations and developments like Swansea University’s Bay Campus to sensitive renovation work on historic grade-listed buildings.

Whatever the project or challenge, we apply the same exceedingly high standards and deliver bespoke, innovative, and flexible solutions to maximise the potential of each scheme.


No matter how complex your building or project, we are here to provide a one-stop-shop for all your mechanical needs. Our expert team of experienced and highly qualified engineers are here to not only meet your expectations, but to exceed them – from start to finish and beyond.

From large planned preventative maintenance and repairs contracts to tailored services that provide an optimised working environment, our duty is to take your goal and transform it into a fully functional and immaculately maintained operation.

Urdd Gobaith Cymru, Llangrannog
We were delighted to work on a very special project in a very special location in Wales. Many schoolchildren growing up in Wales will have magical and nostalgic memories of school trips to Urdd Gobaith Cymru in Llangrannog.
Morfa Road Student Accommodation
Morfa Road Student Accommodation
We were proud to work alongside Create Construction for developer Bricks Capital Developments on this ambitious new student build in Swansea for end client True Student.
SCCC, Grange Hospital
Specialist Critical Care Unit, Grange University Hospital, Newport
We were proud to work alongside main contractor Laing O’Rourke and sub-contractor Crown House Technologies for end client the Aneurin Bevan University Health Board, to make this Specialist Critical Care Unit a reality.
Pantycelyn Student Accommodation
Pantycelyn Student Accommodation
We were proud to work alongside Morgan Sindall for end client Aberystwyth University on this ambitious new student build.
The College, Swansea Bay Campus
The College, Swansea Bay Campus
Forming part of the £450 million Bay Campus Development, the College is a 46,500 sq ft academic facility set over three floors. It includes 18 teaching rooms, computer labs, study areas, offices, meeting spaces, as well as space for social and cultural activities.
Maes Ebbw School
Maes Ebbw School
We were proud to work alongside Morgan Sindall for Newport City Council on this prestigious project, which involved the expansion of Maes Ebbw School with the aim of increasing its capacity to 150 pupils from 100.
Canolfan Rheidol, Aberystwyth
Ceredigion County Council, Canolfan Rheidol
We were delighted to work on this incredible 7,273sqm office building for Ceredigion County Council, designed to accommodates up to 475 staff members in a primarily open plan office space.

An extensive range of services nationwide

Electrical & mechanical installations
Electrical & mechanical maintenance contracts
Bespoke design & project management
Test & inspection services
Specialist Fire Protection Systems
Emergency lighting contracts
Dedicated and responsive service
Committed to health & safety
Cost-effective electrical / mechanical packages
The latest technological advancements
Apprentices Employed
Years in Industry