It's time to shut up shop as series four concludes. Charity day arrives at Valco and everyone is doing their bit to help. Rose eyes the big draw prize, too.

Valco comes under threat from a new budget store as the hit supermarket sitcom starring BAFTA winner Jason Watkins returns. Sarah Parish joins the cast

With barely a customer in Valco's aisles, Gavin sends a team of spies into new rival supermarket Lauda. Later, its ruthless new manager Cheryl pays him a visit.