The Bristol RE was a rear-engined single-decker bus or single-decker coach chassis built by Bristol Commercial Vehicles from 1962 until 1982. It is often considered the most successful of the first generation of rear-engined single-decker buses. From 1972, sales to the National Bus Company (NBC), which had taken over the operations of both THC and BET) began to dry up, due to the introduction of the Leyland National. From 1976, the RE remained in production only for the Northern Irish state-owned bus companies Ulsterbus and Citybus, and for export to Christchurch Transport Board, New Zealand.