Les had only three wins in 1931. The following year, his first with a full licence (that is, as a non-apprentice), he recorded just one, the last of his 42 wins on the Flat, aboard Philip Sidney, who won the Bristol Selling Handicap at Bath on July 13, 1932. His final ride on the Flat was on Fearman, owned and trained by Lionel Cundell, finishing fourth of nine in the Golden Hill Selling Plate at Chepstow on October 6. For that ride, he had to put up 1lb overweight on a horse set to carry 9 stone, a clear indication of the problem that Les, like many jockeys before and since, faced in their battle with the scales. He did not renew his licence in 1933.