The Circuit of Wales is a proposed 5.5 km Circuit designed to host World Championship events like MotoGP and World Superbikes. The circuit designed by Populous Architects and Arup is located on 340 ha of uplands heath and marshland north of Rassau at the Heads of the Valleys on the edge of the Brecon Beacons National Park. Following novation of the design team, Llewelyn Davies were appointed as consultants to the Client in 2013.