Can you identify this building to win a £25 drinks voucher?

Here the occupants do their serious work behind crinkly tin on one side of this building and write it up next to windows on the other. But what is the building?

The building on 5 October was the ACAD Centre of Central Middlesex Hospital in west London, designed by Avanti Architects. The winner was Susie Furmston of, er, Avanti Architects …