Warren Bank

Warren Bank is a 3.1 ha biological Site of Special Scientific Interest south-east of Wallingford in Oxfordshire. It is managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust.

This steeply sloping site has unimproved chalk grassland and scrub. There is a rich variety of flora, including horseshoe vetch, chalk milkwort and bee orchid. There are also many insects, with butterflies such as dark green fritillary and green hairstreak.