Group Offices

Birwelco Ltd

 Trinity Point, New Road
West Midlands
B63 3HY

Tel: +44 (0)121 585 5566
Fax: +44 (0)121 585 5350

Registered Company No.05177978
Registered address: Unit House, Elba Business Park, Elba Crescent, Swansea SA1 8QE

Unit Superheater Engineering Ltd

Unit House, Elba Business Park
Elba Crescent

Tel: +44 (0)1792 654 091
Fax: +44 (0)1792 456 198

Registered Company No.10761227
Registered address:   Unit House, Elba Business Park, Elba Crescent, Swansea SA1 8QE 

Unit Engineers & Constructors Ltd

Lancaster Approach
North Killingholme
DN40 3JZ

Tel: +44 (0)1469 540 478
Fax: +44 (0)1469 540 548

Registered Company No.10795772
Registered address:  Lancaster Approach, North Killingholme, Immingham, DN40 3JZ. 

Contact Us


UnitBirwelco brings together two of the UK’s longest established engineering businesses: Birwelco, or The Birmingham Welding Company, formed in 1902 and Unit Superheaters, formed in 1909 to produce detachable superheaters for Lancashire type boilers.

In 2004 Unit Superheaters was acquired by Unit Engineers and Constructors, bringing together fabrication, mechanical construction and maintenance expertise with specialist engineering services. Then in 2010 the Unit Group acquired Birwelco, adding engineering design, global project management and procurement and patented flare systems, to create one of the UK’s only true EPCM contractors.

Having grown from a specialist engineering base, UnitBirwelco's history brings a unique perspective to EPCM projects: we have an innate understanding of complex engineering solutions and acute awareness of the level of detail and precision that are fundamental to all major engineering projects.