Having attended Winchester and Christ Church College in Oxford, Firth played for the University XI against Gents of England in 1919 and made his Nottinghamshire debut immediately afterwards against Middlesex at Lord’s. A medium-pace right-arm leg-break bowler, he played four games for Nottinghamshire taking four wickets. A schoolmaster at Winchester College, he went on to be Master of the Temple and Canon Emeritius of Winchester Cathedral but died in 1957 aged 57.