Berwyn Jones represented Other Nationalities (RL) while at Wakefield Trinity, he played in the 2-19 defeat by St. Helens at Knowsley Road, St. Helens on Wednesday 27 January 1965, to mark the switching-on of new floodlights, represented Commonwealth XIII while at Wakefield Trinity in 1965 against New Zealand at Crystal Palace National Recreation Centre, London on Wednesday 18 August 1965, and was selected for the 1966 tour of Australia and New Zealand but did not make the Test team due to the form of Barrow's William "Bill" Burgess and Geoffrey "Geoff" Wriglesworth of Leeds.