Mobley quickly impressed as a strong centre half and rapidly progressed from City's Colts side to the first team.
[3][4] Mobley signed for Wednesday as a 17-year-old, primarily as an understudy to Peter Swan who was then first choice centre half for the England national side.
Mobley's chance to play in the first team probably came quicker than expected as Swan was banned for his part in the 1964 British betting scandal.
[3][4] Mobley's good form with Wednesday earned him 13 caps for the England national Under 23 team between November 1964 and June 1967.
[3] In 1975 Mobley moved with his family to New Zealand, living in the Auckland area, working first for a brewery and then becoming an insurance salesman.