What is the Lansdowne?
The Lansdowne British Championship is the official British Championship for pre-1964 500cc Grand Prix motorcycles. The Lansdowne Clubman’s 500cc Championship and the Avon 350cc Championship are for pre-1964 classic racing motorcycles with permitted period modifications. Finally,
the Lansdowne Pre-55 Championship is for 1950s spec Goodwood Revival eligible motorcycles, of unlimited capacity.