Campbell Architects Services Architect Website campbellarchitects.co.uk/ Get exclusive Campbell Architects updates on your email Property enquiry Service offer Product offer Subscribe Campbell Architects News News from the company + Post news Show all Buildings Show all buildings Eleven Hanover Square W1S Following the handover of the retail unit on the Oxford Street side, the office accommodation at Hanover Square is now completed, reports Campbell Architects. 28.04.2017 Completion 2017 8 Pollen Street Mayfair W1S 287-291 Oxford Street Mayfair W1C Completion 2016