The Canbury Medical Centre in Kingston, Surrey, offered monthly rewards of up to £14 in Boots vouchers to drug misusers in return for looking after themselves.
As a result of the initiative, 83 per cent of misusers involved in the scheme stayed street clean.
This week, we reveal all of the category winners and ask you, the readers of GP, to vote for your favourite initiative - you could win an iPod Touch.
The winner of the Practice Team award was the South Holderness Medical Practice in East Yorkshire, with its one-stop review of patients with multiple long-term conditions.
In the category for Innovative Clinical Care - General, the Alconbury surgery in Huntingdon, Cambridgeshire, impressed the judges with its rapid diagnosis of obstructive sleep apnoea syndrome.
The CareCreds scheme for drug misusers in Kingston took the award for Innovative Clinical Care - Specific.
Editor-in-chief of GP Colin Cooper said: 'It is great to see that once again we have been able to highlight some real innovations in general practice that can now be picked up and replicated across the UK.'
He added: 'Thanks again to our partners the RCGP, our sponsors the MDU, the judges, and all of the practices that entered this year.'
The deadline for votes is 5 August 2011.