Such a scheme would have to come with a requirement to collect and store returned bottles, and arrange for their collection by either a private contractor or local authority. I don't think local retailers want to face these burdens, never mind fund a national bureaucracy to administer the scheme.
I'm afraid there is no evidence that such a scheme would lead to the greater use of local shops as you suggest.
It is just as likely that customers would take bottles and cans back to superstores or other recycling facilities.
This is an important debate but surely the way forward lies in effective local work rather than expensive national schemes.
James Lowman, chief executive, Association of Convenience Stores