Partial redevelopment of site comprising: 1) Demolition of the frontage building adjacent to Oldmoor Road. 2) Partial demolition, rebuilding and extension to existing self-storage building, including ancillary office accommodation, and modifications to Oldmoor Road access. 3) Demolition of structures and erection of a detached building for use as a builders' merchants (including storage/distribution, trade counter, offices and ancillary retail sales) and modifications to Whitefield Road access; 4) associated car, cycle and other parking, hard and soft landscaping.