Good to hear he's still around...I was a friend of Dudley White, whose family had a house round at Abergwesyn if that helps...I'll tell him you were asking!
Here's the cyclists from the first few pages of the finishing list from 1986:
1: Roy Rivers
2: Joe Murray
4: Mike Newton
6: Matt Mills
7: Chris Tatton
15: Dudley White
16: Tim Greenland
17: Andy Pegg
22: Friend Wood
24: Vince Edwards
28: Ross Friend
42: Andrew Bevan
45: Andrew Wood
68: Jaquie Phelan
77: Dan Chambers
80: Glen Tompson
83: Rob Lally
I was never much of a racer, but there's some venerable names from the past there...anyone out in RetroLand?