[1] Thomas made his debut for Wales indoors in 1955 and outdoors in 1960.

[2] He finished runner-up to David Bryant in the 1981 World Indoor Bowls Championship in Coatbridge.

He also won the British Isles Bowls Championships fours title in 1964.

[3][4] During the 1984/85 season he was the President of the Welsh Indoor Bowling Association.

[1] and received the MBE in the 1994 Birthday Honours as President of the Welsh Association of Visually Handicapped Bowlers for services to Bowling and to People with Disabilities.