Wainfleet All Saints is an ancient port, market town and civil parish on the east coast of England, in the East Lindsey district of Lincolnshire, on …Wainfleet All Saints is an ancient port, market town and civil parish on the east coast of England, in the East Lindsey district of Lincolnshire, on the A52 road 5 miles south-west of Skegness and 14 miles north-east of Boston. It stands on two small rivers, the Steeping and Limb, that form Wainfleet Haven. The town is close to the Lincolnshire Wolds. The village of Wainfleet St Mary is to the south. In 2011 the parish had a population of 1604.