OVERTON used to be rather pretty and had a defined role as a venue for sheep fairs and silk mills. Now it is where the paper for our banknotes is made. It still retains a certain appeal, though it has become extremely corpulent with new housing estates pushing at its seams. There are some thatched cottages, shops, pubs and restaurants, and a gun shop. A 17th-century, four-bedroom house in the centre will cost around £400,000. Family houses on the new developments cost up to £385,000; large individual houses over £475,000. Winchester Street is the poshest bit.