The Construction Access Systems Ltd (CAS) Common Tower System installed on The Tower, St George Wharf, a 51 storey residential tower, in Vauxhall, London. The CAS Common Tower System is manufactured from aluminium alloy to minimise weight and has a small 5m x 5m footprint yet it is capable of running multiple hoists simultaneously. This allows all material and personnel hoists to be concentrated in one area, which streamlines loading efficiency at ground level.