Chalk (and Upper Greensand)
Hampshire and South West (1)
North Kent (2)
London Basin (3)
Southern East Anglia (Cambs and Suffolk) (4)
Northern East Anglia (Norfolk) (5)
Yorkshire (6)
Permo-Triassic sandstones
South West (7)
Midlands (8)
Vale of Clwyd (9)
Cheshire (10)
Lancashire (11)
Shropshire (12)
Vale of York (13)
Lower Cretaceous sands
Lincolnshire (Spilsby Sandstone) (14)
Northern East Anglia (Sandringham Sands) (15)
London Basin (Lower Greensand) (16)
Weald (Lower Greensand) (17)
Jurassic sands and limestones
Lincolnshire (Lincs Limestone) (18)
Yorks (19)
Central England (Great and Inferior Oolite) (20)
Southern England (Yeovil Sands etc.) (21)
Carboniferous Limestone
Mendip (22)
South Wales (23)
Peak District (24)
Northern England (25)
Fell Sandstone
Northern England (26)
Tertiary
London Basin (27)
Hampshire (28)
River and river terrace deposits
Thames Gravels (29)
Pliocene/Pleistocene glacial sands and gravels
East Anglia (Crag) (30)
Millstone Grit (31)
Coal Measures (32)
Old Red Sandstone (33)
Mercia Mudstone Group (34)
Lower Palaeozoic and Precambrian (35)
Igneous and Metamorphic
Dartmoor and Cornwall granites (36)