He moved on to West Bromwich Albion in 1967. During his time at the club West Brom won the 1967-68 FA Cup but Colquhoun missed the final against Everton through injury.
Colquhoun transitioned to West Bromwich Albion in 1967 and during his time at the club, they achieved the 1967-68 FA Cup victory. However, he was precluded from participating in the final against Everton due to a physical limitation.