Booker was initially spotted by Watford whilst playing for Saturday side Bedmond Social and they invited him to attend a couple of training sessions before he also caught the eye of Brentford and was offered a trial.
[2] After agreeing a 'fee' with Bedmond, which saw the non-league side receive a set of tracksuits,[2] Booker signed for the Bees and made his Football League debut two days later on 14 October 1978, ironically against his home-town club of Watford.
[1] Blades midfielder Simon Webster had broken his leg and United needed someone to replace him[2] so club physio Derek French, who had played with Booker back in his Bedmond days, contacted him to see if he was interested in a move North.
[5] After drifting out of football for a while Booker eventually took up a coaching post at Brentford in 1994[2] before being offered the position of assistant manager to Micky Adams at Brighton & Hove Albion in 2000.
[1] When Adams left after the side were promoted Booker was made joint caretaker manager along with Martin Hinshelwood before the arrival of Steve Coppell.
[1] After a spell managing village side Pease Pottage FC, Booker returned to Brighton along with Micky Adams in 2008 to take up the position of reserve team coach.
[2] Following his retirement from playing Booker made occasional appearances as match summariser on BBC Radio Sheffield[2] and married former Southern FM breakfast show host Nicky Keig-Shevlin in 2008.