Dennis was born in Holbeck, Leeds, Yorkshire, and learned his cricket in the Scarborough district.
He was a right-arm fast bowler, who took 163 wickets at 29.26, with a best of 6 for 42 against Northamptonshire, one of five five-wicket hauls in his career.
[2] He was unable to maintain his best form, and played most of his cricket in the 1930s in the leagues and for Cheshire in the Minor Counties Championship.
[2] He played for Heckleton Main, Hull, Baildon, and Undercliffe and scored over 1,000 runs as a professional for Oxton (Cheshire) in 1935.
[2] In 1948, he emigrated to New Zealand to take up fruit farming near Christchurch, and became a selector for the Canterbury Cricket Association.