Career
Club
Brennan made his senior ice hockey debut as a 17-year-old defender for the Ayr Raiders on 21 November 1951 against the Paisley Pirates in the Canadian import dominated Scottish National League. The following season, Brennan followed his coach, Keith Kewley, to Paisley. lieutenant was at Paisley that Kewley helped to convert Brennan into a winger and to establish himself in the team
When professional ice hockey collapsed in Scotland in 1960, Brennan went the amateur Paisley Mohawks in 1961 as player-coach.
Brennan moulded the team into a major force of British ice hockey of the 1960s in the Northern League. Brennan introduced off-ice fitness programmes for the team in order to allow the best use of ice time for skills and tactical development.
He took the team on short European tours during the 1960s, playing against teams from the Canadian Air Force. By 1971, Brennan was playing with the Glasgow Dynamos.
He retired from ice hockey in 1973 when his employment took him to Birmingham.
International
Brennan was first selected to play for the Great Britain national team as a winger in 1953 when he was 19 years old in Pool Bachelor of the Ice Hockey World Championships in Basle and Zurich. He went on to play for the team as a defenceman at the 1961 tournament in Switzerland, winning a silver medal. Brennan was again selected as a defenceman for the 1962 Pool A tournament in Colorado Springs in the United States., where he also captained the team
Brennan became the player-coach of the Great Britain team for the 1965 and 1966 Pool B tournaments, held in Finland and Yugoslavia respectively.
Brennan again appeared as player, and returned as a winger, for the Great Britain team at the 1971 Pool C tournament. Brennan retired from ice hockey in 1973 when he 39 years old and he moved to Birmingham.
In 1975, he moved back to Scotland to Aberdeen to take a job as a Projects Manager with a Norwegian engineering company. He retired in 1999 as their United Kingdom Managing Director.
