Wiley first took up the whistle in 1981, then officiated in the
West Midlands (Regional) League until 1991, when he became an
assistant referee on
the Football League List. In 1994, he was promoted to the FA Premier League List of assistant referees, and a year later progressed to the Football League referees' List. In 1998, he refereed the
FA Women's Cup Final, when
Arsenal beat
Croydon 3–2. Wiley made the step up to full Premier League referee in 1999, taking charge of his first match on 11 August 1999 at
The Dell between
Southampton and
Leeds United, which the away side won 3–0. In 2000, he was
fourth official for the
FA Cup Final at
Wembley, when
Chelsea defeated
Aston Villa 1–0, courtesy of a
Roberto Di Matteo goal after 73 minutes. He was subsequently given the honour of refereeing two
Football League Cup semi-finals (2003 and 2006), but his first prestige men's game as man-in-the-middle was the
Community Shield match at the
Millennium Stadium,
Cardiff, between
Arsenal and
Liverpool on 11 August 2002. The
London side ran out 1–0 winners, thanks to a
Gilberto Silva goal in the second half. Wiley was the referee for the
2005–06 League Cup final between
Manchester United and
Wigan Athletic, also at the Millennium Stadium – United winning 4–0. He then took charge of the
FA Cup Final on 13 May 2006 when Liverpool played
West Ham United, at the same venue. Mike Dean was originally appointed to referee the game but
the Football Association took the unusual step of replacing him after concerns were raised about his ability to be impartial towards Liverpool, who are based near Dean's home town on
Merseyside. In the game, Liverpool triumphed on
penalties by 3–1, the score at the end of
extra time being 3 goals each. On 24 May 2008, Wiley took charge of the Championship Playoff Final between Hull City and Bristol City at Wembley Stadium, a match which Hull City won. Wiley officiated the match between Manchester United and Liverpool at
Old Trafford on 14 March 2009, in which he awarded two penalty kicks (one to Manchester United and one to Liverpool,) as well as a red card to United's
Nemanja Vidić. Commentator
Andy Gray said on Sky Sports's TV commentary, following Vidić's dismissal that, "Alan Wiley, in my opinion, has got all the big decisions (today) right." Liverpool's Fabio Aurelio would score the resulting free-kick, putting his team up 3–1 in a match they won by a final scoreline of 4–1. On 15 August 2009, he had the honour of refereeing the first game of the new
Premier League season between
Chelsea F.C. and
Hull City A.F.C., Chelsea ran out 2–1 winners. In July 2010, Wiley agreed to retire from refereeing and became a full-time referee coach, sharing his expertise in developing the next generation of referees. He currently holds an FA Preliminary Coaching Badge. ==Career statistics==