GMW Architects

In August 2015, the firm was taken over by another business, Scott Brownrigg, "as part of plans to move into the airport sector.

In the 1950s it designed Castrol House, a tower on Marylebone Road in London, notable as one of the first uses of curtain walling on a building in the United Kingdom, and the central campus for the University of Sheffield.

These buildings both featured an innovative structure by which the office floors are hung by steel rods from cantilevers extending out from the concrete core, rather than being supported from ground level.

Soon afterward, GMW was awarded a commission to design the King Saud University in Saudi Arabia.

It undertook work for Network Rail, had completed the passenger terminal at the Prince Mohammad bin Abdulaziz Airport in Medina, and continued to work on the completion of the Istanbul Airport (designed by Grimshaw Architects, Nordic Office of Architecture and Haptic).

The former Castrol House, now Marathon House, designed by GMW Architects and one of the first curtain wall buildings in the UK
Commercial Union Tower (now St Helen's) under construction, 1968