[1] Biley was born in Leighton Buzzard and began his career with Luton Town's youth team before joining Cambridge United in 1975.
Biley was then signed by Everton but he had a frustrating spell at Goodison Park scoring just three goals in 21 and left before the end of the 1981–82 for Stoke City.
After scoring 65 goals in 119 games for Pompey he left for Brighton & Hove Albion where he spent two seasons and then a short return to Cambridge United.
[6] In February 2004, Biley joined Kettering Town as assistant manager, working under his former Derby County colleague Kevin Wilson.
[10] In 2007, Biley was once again re-united with Wilson as he became assistant manager of Corby Town, however, following a bad run on the back end of the year.