Later career
Curtis signed for Queens Park Rangers on a free transfer on 30 June 2007. However, after the sacking of John Gregory, Curtis' first team opportunities dried up and his contract was terminated by QPR in December 2007.
Following a trial with Notts County, Curtis was badly injured and was forced to sit out the first half of the 2008–09 season. He joined Worcester City in January 2009 to gain valuable match fitness after his lengthy lay off, and then signed for Conference National side Wrexham at the end of February. He was reluctant to play in the Conference and turned down the chance of joining Wrexham for the following season. On 28 July, Curtis signed a one-year deal at Northampton Town after impressing manager Stuart Gray during a pre-season trial. He made his league debut in the defeat at Chesterfield. He was released by the club on 12 May 2010 along with five other players.
In May 2010, Curtis joined A-League club Gold Coast United on trial, signing a permanent deal with the club on 16 June. He made his debut in the home defeat against Melbourne Victory.