I came to see the new Greenhill Building of the Harrow Arts Centre because I thought it looked interesting in the long list for the RIBA London awards.

The Harrow Arts Centre is itself an unexpected building, not in Harrow, but Hatch End, its main building having been the assembly room for the Royal Commercial Travellers School, which closed down in 1967.  It was designed by H.O. Cresswell, who seems to have been a local architect, not the Harry Cresswell who worked under Aston Webb and then for the Office of Works:-

Chris Dyson was commissioned to add a new building, the Greenhill Building, which he has done in a lightweight, semi-industral way, constructed out of corrugated corten painted bright red, so that it fits naturally in the site:-