Introduction
Leslie "Les" M. Thomas is a Welsh rugby union and professional rugby league footballer of the 1940s, playing representative level rugby union (RU) for Wales XV, and at club level for Llanelli RFC, and playing representative level rugby league (RL) for Great Britain, and Wales, and at club level for Oldham, as a Second-row, i.e. number 11 or 12, during the era of contested scrums.
International honours
Les Thomas represented Wales XV (RU) while at Oldham (RL) in the 'Victory International' non-Test match(es) between December 1945 and April 1946, and won caps for Wales (RL) while at Oldham in 1947 5-caps, and won a cap for Great Britain (RL) while at Oldham in 1947 New Zealand.
Six rugby league footballers represented Wales XV (RU) while at rugby league clubs, they were; Tyssul Griffiths, Elwyn Gwyther, Gomer Hughes, Hugh Lloyd-Davies, Harold Thomas, and Leslie Thomas.
Gomer Hughes, and Harold Thomas had previously won Wales (RU) caps, but the other footballers hadn't, and having already changed to the rugby league code they were unable to do so, but Tyssul Griffiths, Elwyn Gwyther, Leslie Thomas, did go on to win Wales (RL) caps.