[2][3] In 1987 Walker turned professional signing for the Watertech-Dawes Team of Keith Lambert, Sid Barras, Dave Millar & Phil Wilkins.
He achieved six wins and won the TV Times sprints competition in the inaugural Kelloggs Pro Tour of Britain.
In 1988 he signed for Raleigh Banana and achieved five wins and the Wincanton Sprints winner TV city centre cycle series.
In 1990 he won 16 times for the team (now called Banana Falcon) including McEwans L.A. Lager TV series and was the Professional Cycling Association 'Rider of the year'.
In 1998 for Team BRITE he won eight times including the Havant GP premier race and was 13th overall in the Tour of Britain and was National Criterium Champion.