It is just after half past eight in the evening in the Suffolk wood. The sun is setting. It is dusk, very warm and dry with light breezes. There are no people about. The A12, about four miles away provides a reliable hum. Aeroplanes lazily arc overhead. Crickets chirp, leaves move in the breeze, what may be muntjac deer creeps about. Listen out for the distant bell of St Marys Church, it can be heard striking nine.