Number 1 Main Street, Littleport, was once Fred Brown’s Bridal Shop. But then two years ago it was transformed into a convenience store, Costcutter. Costcutter’s friendly proprietor, Thillaivarothayan Poopalsingam, says he’s no stranger to country life himself, having been born and brought up in a small village in Sri Lanka. “My brother-in-law has a corner shop in Cambridge, and he used to run convenience stores in both Soham and Waterbeach,” so I got an idea…