The project starts a wider masterplan to transform facilities at the highly-rated London higher education institution.
It was awarded via the Pagabo framework, which drives efficiencies and best value across public sector procurement.
ISG will build a new five-storey, concrete framed teaching block, extending to 160,000 sq ft of space.
Constructed on a plot adjacent to the existing college buildings on campus, it will accommodate an enlarged intake of up to 3,000 students when it opens at the end of 2019.
Targeting a BREEAM excellent environmental performance rating, the new learning centre incorporates a full height atrium space, with internal wood cladding.
Exposed concrete soffits and structural columns are a key design element, with rainscreen cladding and curtain walling to the structure’s façade.
Steven McGee, managing director for ISG’s Construction South business, said: “The complexities of this project have ideally suited the Pagabo framework procurement route that was selected to bring this highly anticipated scheme to site.
““This is a beacon project for RuTC, kickstarting the wider redevelopment of its entire campus site and a key win for the ISG business, further demonstrating our education credentials on high profile schemes.”