The imminent demise of C4's Big Brother is not just bad news for its legions of fans. Tesco will also be mourning the end of the reality TV phenomenon.

Its Extra in Elstree next to the BB house has been attracting at least 1,000 more customers than usual every Friday in the shape of fans turning up for the weekly eviction party hosted by Davina McCall. With no food on sale inside fans have been stocking up on crisps, snacks and soft drinks.