Down in the capital city the London Co-operative Party, with the support of the Labour Group in the London Assembly, is preparing a co-op themed set of policies for a Co-operative Party manifesto for the Greater London Authority elections in May 2008.
You can read about it on Politics For People - Beating Boris with co-op ideas
I actually didn't know Co-operative Parties wrote local manifestos. But it sounds a good idea, perhaps it would be a good idea for Manchester too. Reference : Labour's Policies for Manchester 2007