By Simon Allin @SimonAllin3 Local Democracy Reporter, Barnet, Enfield and Haringey A computer-generated image of The Rockery A developer has won permission to build tower blocks up to 24 storeys high at the site of a car dealership. Parkside Investments was given the green light to build 470 new homes at the Crown Honda showroom in Hyde Estate Road, Colindale, at a meeting of the strategic planning committee on Tuesday. The scheme, known as The Rockery, involves knocking down the existing units and building three blocks of flats 20, 23 and 24 storeys high, with 35 per cent of the homes classed as affordable. It will also provide indoor community space, a café, retail opportunities, workspaces and storage.