In 1997, Allan unseated Irvine Patnick of the Conservative Party achieving a majority of 8,221 with a swing of 15.3%. He was only the second non-Conservative to win Sheffield Hallam, and the first since 1918. In 2001, he was re-elected with an increased majority of 9,347. During his tenure, Allan held various committee seats, including the Chair of the House of Commons Information Select Committee and a seat on the House of Commons Liaison Select Committee. Richard Allan was the founding chairman of the Parthenon 2004 campaign for the return of the Parthenon Marbles.