[5] Lucas' first participation for Wales came in a wartime international match against England at Ninian Park on 9 May 1942, scoring the only goal of the game in a 1–0 victory.
[6] He went on to play in a further seven wartime matches for Wales before winning his first full cap on 23 October 1948 in a 3–1 defeat to Scotland in the 1949 British Home Championship.
[2] Following his retirement from playing, Lucas became full-time manager of Newport County until 1961 when he resigned due to a lack of support and what he perceived as a general apathy surrounding the club.
Lucas later took charge of Newport for a third and final spell in 1970, working without wages for the first six months due to financial problems at the club, which lasted until 1974.
[2] In 1951, following his move back to South Wales to join Swansea Town, Lucas took over the Black Horse Inn, in Newport, with his wife Edith.