Bill Lomas (left) andJohn Surtees (right), the 1956 350cc and 500cc World Champion respectively.Carlo Ubbiali, the 1956 125cc and 250cc World Champion.
Reigning 500cc championGeoff Duke had to serve a six months ban at the start of the season for supporting a strike by privateer riders over starting money at the 1955Dutch TT.[1][2]
Points were awarded to the top six finishers in each race. Only the four best races were counted in all five classes: the Sidecars, 125cc, 250cc, 350cc and 500cc championships.