 The race was eventually won by Eddie Twemlow on a New Imperial at an average speed of from Johnston and Eddie's brother, Ken Twemlow, riding a New Imperial.The Senior TT race was sensationally won by Howard Davis while competing against the works teams with a motorcycle of his own manufacture, an HRD, in 3 hours, 25 minutes, 8 seconds at an average speed of .A new lap record was posted by Jimmie Simpson, in 32 minutes and 50 seconds and an average speed of on an AJS motorcycle, but he failed to finish.