[1] The league consisted of seven teams after the West Ham Hammers ceased competitive speedway racing at the end of 1955.
[2][3][4] Norwich Stars rider Malcolm Flood died on 2 April, at Poole.
The 25-year-old rider suffered fatal injuries despite an earlier warning from the race steward that he was riding too erratically into the bends.
Wimbledon won the second and final stage and were therefore declared the 1956 National Trophy champions.
Belle Vue Birmingham Bradford Norwich Poole Wembley Wimbledon