Clarke was immediately thrown into the first team at Plough Lane, playing 12 league games and scoring three goals as the "Dons" finished seventh in the First Division. New boss Joe Kinnear then led the club to a 13th-place finish in 1991–92. The club then became founder members of the Premier League, posting a 12th-place finish in 1992–93; Clarke scored five goals in 33 appearances. Despite being forced to play their home games at Crystal Palace's Selhurst Park, they rose to sixth in 1993–94, finishing higher than all London clubs except Arsenal. Wimbledon then finished ninth in 1994–95 and Clarke won the BBC Goal of the Month award for February with his goal against Liverpool at Anfield in the FA Cup fifth round. He scored four goals in 1995–96, helping the "Wombles" into 14th place. Clarke hit the net just once in 1996–97 as the "Crazy Gang" hit eighth in the league, and reached the semi-finals of both domestic cup competitions. He played 20 games in 1997–98, again scoring just one goal, as Wimbledon dropped to 15th. In total he played 212 league and cup games for the club, scoring 23 goals. Clarke started the 1998–99 campaign on loan at First Division side Port Vale, but made just six goalless appearances for John Rudge's "Valiants". He spent four weeks on loan at Second Division side Northampton Town in January 1999, but made just four goalless appearances for the struggling Sixfields side.
Peterborough United
He was given a free transfer in June 1999, and joined Third Division club Peterborough United. He rediscovered his scoring form at London Road under Barry Fry, his former manager at Barnet, bagging 18 goals in 43 appearances in 1999–2000. The "Posh" finished fifth, and Clarke scored at Underhill in a 5–1 win over Barnet in the play-off semi-finals. He went on to score in the play-off Final at Wembley, the only goal of the game, to take Peterborough into the Second Division; he said that "It's the best moment of my life." Clarke hit 11 goals in 48 games in 2000–01, helping Peterborough to acclimatise well to the third tier. In December 2001 he failed a random drugs test – the results being released in February the following year. Accepting his explanation that it was a 'one-off' he was given a four-week ban. He quickly signed a new contract with the club in April 2002, and returned to the first team. On the field, he hit eight goals in 37 games in 2001–02. Scoring 19 goals in 48 games, he described the 2002–03 season as his "best ever". He scored 12 goals in 50 games in 2003–04, helping Peterborough to avoid relegation by three places and two points. In May 2004 the 36-year-old put pen to paper on a new one-year contract. He remained popular throughout his time at Peterborough, even though he only scored three goals in 37 appearances in the 2004–05 relegation campaign, before being released in May 2005. In all he scored 73 goals in 266 appearances in all competitions for Peterborough.
Post-retirement
After retiring, he worked on a market stall in the centre of Barnet.
Statistics
Source:
Honours
;Individual
Barnet F.C. Player of the Year: 1990
;Barnet
Conference National champion: 1990–91
;Peterborough United
Football League Third Division play-off final winner: 2000
