In 1988, he won the non-ranking WPBSA Invitation Event beating Alex Higgins 5–4 in the final.

[1] One of his career highlights was at the 1989 UK Championship, where he led John Parrott 7–0 and 8–1 in their Last 16 match before falling over the line at 9–6, then whitewashing Jimmy White 9–0 in the quarter-finals, and then leading world number 1 Steve Davis 4–0, 6–2 and 8–7 in the semi-finals, before Wilkinson misread the score thinking that Davis didn't need snookers and went for a risky shot.

While fancied to potentially go far at the 1991 World Championship, Wilkinson missed the chance of a 147 maximum break and a £100,000 prize in his first round match against Doug Mountjoy after missing the final yellow off its spot, and eventually lost 3–13 to Jimmy White in the quarter-finals in a surprisingly one-sided scoreline.

After dropping off the main tour he played in the PIOS whilst also working as a tournament assistant for World Snooker.

During this peak moment of his career in December 1991, Wilkinson defeated Dean Reynolds 5–1, world champion John Parrott 9–8, Jimmy White 9–6 and then beat Steve Davis 18–11 in the final to win the 1991 World Matchplay title and the £70,000 winner's cheque.