Hanvidge was the 2005 German Open Champion and made his World Championship debut in 2004, losing a first round match to Jarkko Komula.
He missed out on qualification for the event in 2005, but returned in 2006 and beat Co Stompé and Simon Whitlock before losing 3–5 to Shaun Greatbatch in the last eight.
Hanvidge reached the final of the 2008 Norway Open, losing to Willy van de Wiel.
Hanvidge was forced to qualify for the 2009 BDO World Championship, but fell three rounds short in a defeat to Paul Gibbs.
Hanvidge earned enough ranking points to secure a place in the 2010 BDO World Championship, but was beaten in the first round by Scott Waites while reportedly suffering a bout of dartitis.