The National Trophy (speedway 1931–1964) was a speedway Knockout Cup competition in the United Kingdom for tier one teams.
[1][2] Oxford Cheetahs were the last winners of the National Trophy[3] before it was replaced by the British League Knockout Cup in 1965.
[4] + final not held due to outbreak of war, declared joint champions.
[5] Knockout Cup (speedway) for full list of winners and competitions