From childhood memory he was a tough tackling central midfielder.
A quick google showed this link, where the celtic mag tracked him down for a chat:
Scroll to 1:35 to see Shepherd score v Doncaster in Aug 1990:
Real false dawn in that game, Gates plays Walwyn in to put us 1-0 up in front of a big August crowd...
Tony Shepherd is now in Security work, like at Political party conferences.