Racetrack ice cream seller calms nervous horse, and, as a result, lands a job as a stableboy, eventually riding the horse to win in a funny and exciting race.
In a sub-plot he is accused of stealing the wallet of one of the connections, which doesn't help when he finds 'digs' with the local police sergeant.

Tailor made for ex-jockey Formby.
Brendan Ryan

Leslie Halliwell's Film Guide
A stableboy calms a nervous racehorse and rides him to victory.
Standard comedy vehicle,  well-mounted, with the star at his box
office peak.

Look out for the big mistake when George, after singing I'm Making Headway Now in the stables, places his uke into a wheel barrow and walks away.
Trouble is that the uke is a totally different instrument to the one GF uses to
sing the song!
Peter Pollard

Come On George

ATP/ABFD
Produced by: Jack Kitchen
Writers: Anthony Kimmins, Leslie Arliss and Val Valentine
Director: Anthony Kimmins
Trade Show: October 20 1939; Released on: January 01 1940
Cast: George Formby, Pat Kirkwood, Joss Ambler, Merial Forbes
Cyril Raymond, George Carney, Ronald Shiner, Gibb McLaughlin,
Hal Gordon, C. Denier Warren, James Hayter.

Songs:
I'm Making Headway Now (Formby/Gifford/Cliffe)
I Couldn't Let The Stable Down (Formby/Gifford/Cliffe)
Pardon Me (Formby/Frame/Nicholson)
Goodnight Little Fellow, Goodnight (Formby/Gifford/Cliffe)