| Group or Formation |
Period |
Notes |
| Alston Group/Knipe Scar Limestone | Carboniferous | |
| Alston Group/Potts Beck Limestone | Carboniferous | |
| Alum Shale | Jurassic | |
| Ampthill Clay | Jurassic | |
| Ancholme Group/Kimmeridge Clay | Jurassic | |
| Ancholme Group/Oxford Clay | Jurassic | |
| Ashfell Limestone | Carboniferous | |
| Aymestry Formation | Silurian | |
| Baggy Sandstones Formation | Devonian | |
| Bala Group/Chatwell Flags Formation | Ordovician | |
| Barton Formation | Palaeogene | |
| Barton Beds | Palaeogene | |
| Barton Clay | Palaeogene | |
| Bee Low Limestones Formation | Carboniferous | |
| Belemnite Marls | Jurassic | |
| Bembridge Limestone | Palaeogene | |
| Bembridge Marls | Palaeogene | |
| Bentham Grit | Carboniferous | |
| Berkshire Oolite Formation | Jurassic | |
| Black Rock Formation | Carboniferous | |
| Blackdown Greensand Formation | Cretaceous | |
| Blackheath Beds | Palaeogene | |
| Blue Lias Formation | Jurassic | |
| Bracklesham Formation | Palaeogene | |
| Bracklesham Beds | Palaeogene | |
| Bracklesham Group/Earnley Formation | Palaeogene | |
| Bracklesham Group/Elmore Formation | Palaeogene | |
| Bracklesham Group/Marsh Farm Formation | Palaeogene | |
| Bracklesham Group/Selsey Formation | Palaeogene | |
| Bracklesham Group/Wittering Formation | Palaeogene | |
| Bringewood Beds | Silurian | |
| Brockenhurst Beds | Palaeogene | |
| Bromsgrove Sandstone | Triassic | |
| Burwell Rock Formation | Cretaceous | |
| Calcareous Grit | Jurassic | |
| Carboniferous Limestone | Carboniferous | |
| Carmarthen Formation | Ordovician | |
| Carstone Formation | Cretaceous | |
| Caton Shales | Carboniferous | |
| Cauldon Low Conglomerate Formation | Carboniferous | |
| Cauldon Low Limestone | Carboniferous | |
| Cementstone Formation | Carboniferous | |
| Chalk Formation | Cretaceous | |
| Chalk Marl Formation | Cretaceous | |
| Chalk Group/"Upper Chalk" Formation | Cretaceous | |
| Chalk Group/Lower Chalk Formation | Cretaceous | |
| Chalk Group/Lower Formation | Cretaceous | |
| Charmouth Mudstone Formation | Jurassic | |
| Chee Tor Limestone | Carboniferous | |
| Cheney Longville Formation | Ordovician | |
| Chillesford Clay | | |
| Claxby Ironstone Formation | Cretaceous | |
| Clifton Down Limestone | Carboniferous | |
| Cockhill Marine Band Formation | Carboniferous | |
| Colsterdale Marine Beds | Carboniferous | |
| Coral Rag Formation | Jurassic | |
| Corallian Oolite Formation | Jurassic | |
| Corallian Group/Coral Rag Formation | Jurassic | |
| Corallian Group/Kingston Formation | Jurassic | |
| Coralline Crag Formation | Neogene | |
| Coralline Oolite Formation | Jurassic | |
| Cornbrash Formation | Jurassic | |
| Cotswold Slate Formation | Jurassic | |
| Crag Group/Norwich Crag Formation | | |
| Crag Group/Weybourne Crag Formation | | |
| Creechbarrow Limestone | Palaeogene | |
| Cromer Forest Bed Formation | | |
| Cromer Knoll Formation | | |
| Cromer Knoll Group/Spilsby Sandstone | Cretaceous | |
| Crossdale Shales | Carboniferous | |
| Crugan Mudstone Formation | Ordovician | |
| Dartmouth Beds | Devonian | |
| Denbury Crinoidal Limestone | Devonian | |
| Dent Group/Keisley Limestone | Ordovician | |
| Ditton Formation | Devonian | |
| Downton Castle Sandstone | Silurian | |
| Downton Sandstone | Silurian | |
| Downton Group/Downton Castle Sandstone | Silurian | |
| Downton Group/Rushall Formation | Silurian | |
| Dufton Shales | Ordovician | |
| Durlston Formation | Cretaceous | |
| Duyfor Mudstone Formation | Ordovician | |
| East Ogwell Limestone | Devonian | |
| Eggardon Grit | Cretaceous | |
| Elton Beds | Silurian | |
| Eyam Limestone | Carboniferous | |
| Eyam Limestones Formation | Carboniferous | |
| Farne Group/Scremerston Formation | Carboniferous | |
| Forest Bed Formation | | |
| Forest Hollow Beds | Carboniferous | |
| Forest Marble Formation | Jurassic | |
| Frome Clay | Jurassic | |
| Fuller's Earth Formation | Jurassic | |
| Gault Formation | Cretaceous | |
| Glauconitic Marl Formation | Cretaceous | |
| Great Oolite Formation | Jurassic | |
| Great Oolite Group/Bath Oolite Formation | Jurassic | |
| Great Oolite Group/Chipping Norton Limestone | Jurassic | |
| Great Oolite Group/Cornbrash Formation | Jurassic | |
| Great Oolite Group/Forest Marble Formation | Jurassic | |
| Great Oolite Group/Hampen Marly Formation | Jurassic | |
| Great Oolite Group/Sharp's Hill Formation | Jurassic | |
| Great Oolite Group/Taynton Limestone | Jurassic | |
| Great Oolite Group/White Limestone | Jurassic | |
| Great Scar Limestone Group/Ashfell Formation | Carboniferous | |
| Great Scar Limestone Group/Danny Bridge Formation | Carboniferous | |
| Greta Grit | Carboniferous | |
| Habberley Shale | Ordovician | |
| Hambleton Oolite Formation | Jurassic | |
| Hampen Marly Formation | Jurassic | |
| Hartshill Formation | Cambrian | |
| Harwish Formation | Palaeogene | |
| Hastings Formation | Cretaceous | |
| Hastings Beds | Cretaceous | |
| Hastings Beds Group/Wadhurst Clay | Cretaceous | |
| Hastings Group/Grinstead Clay | Cretaceous | |
| Headon Beds | Palaeogene | |
| Headon Hill Formation | Palaeogene | |
| Hempstead Formation | Palaeogene | |
| Hilton Plant Beds | Permian | |
| Hirnant Limestone | Ordovician | |
| Holderness Formation | | |
| Hope Shale | Ordovician | |
| Hopedale Limestones Formation | Carboniferous | |
| Hotwells Formation | Carboniferous | |
| Inferior Oolite Formation | Jurassic | |
| Inferior Oolite Group/Chipping Norton Limestone | Jurassic | |
| Inferior Oolite Group/Middle Inferior Oolite Formation | Jurassic | |
| Inferior Oolite Group/Northampton Sands | Jurassic | |
| Inferior Oolite Group/Upper Inferior Oolite Formation | Jurassic | |
| Infracombe Slates Group/Combe Martin Slates Formation | Devonian | |
| Insect Bed Formation | Triassic | |
| Iron Sands | Jurassic | |
| Junction Bed Formation | Jurassic | |
| Keisley Formation | Ordovician | |
| Kimmeridge Clay | Jurassic | |
| Kimmeridge Formation | Jurassic | |
| Kirkby Moor Flags Formation | Silurian | |
| Ledbury Formation | Silurian | |
| Leintwardine Formation | Silurian | |
| Leintwardine Beds | Silurian | |
| Lias Formation | Jurassic, Triassic | |
| Lias Group/Beacon Limstone Formation | Jurassic | |
| Lias Group/Blue Lias Formation | Jurassic, Triassic | |
| Lias Group/Charmouth Mudstone Formation | Jurassic | |
| Lias Group/Dyrham Formation | Jurassic | |
| Lias Group/Marlstone Rock Formation | Jurassic | |
| Lias Group/Scunthorpe Mudstone Formation | Triassic | |
| Lias Group/Whitby Mudstone Formation | Jurassic | |
| Lincolnshire Limestone | Jurassic | |
| Llanfallteg Formation | Ordovician | |
| London Clay | Palaeogene | |
| Lower Borland Shales | Carboniferous | |
| Lower Calcareous Grit | Jurassic | |
| Lower Chalk Formation | Cretaceous | |
| Lower Chalk Group/Abbott's Cliff Formation | Cretaceous | |
| Lower Chalk Group/Cambridge Greensand Formation | Cretaceous | |
| Lower Chalk Group/Chalk Marl Formation | Cretaceous | |
| Lower Comley Formation | Cambrian | |
| Lower Ditton Formation | Devonian | |
| Lower Greensand Formation | Cretaceous | |
| Lower Greensand Group/Atherfield Clay | Cretaceous | |
| Lower Greensand Group/Faringdon Sand Formation | Cretaceous | |
| Lower Greensand Group/Ferruginous Sands | Cretaceous | |
| Lower Greensand Group/Folkestone Formation | Cretaceous | |
| Lower Greensand Group/Hythe Formation | Cretaceous | |
| Lower Greensand Group/Sandgate Formation | Cretaceous | |
| Lower Greensand Group/Woburn Sand Formation | Cretaceous | |
| Lower Hamstead Beds | Palaeogene | |
| Lower Headon Beds | Palaeogene | |
| Lower Limestone Group/Great Scar Limestone | Carboniferous | |
| Lower Marl Formation | Permian | |
| Ludlow Formation | Silurian | |
| Lulworth Formation | Cretaceous | |
| Lynton Slates Formation | Devonian | |
| Magnesian Conglomerate Formation | Triassic | |
| Malton Oolite Formation | Jurassic | |
| Mammaliferous Crag Formation | | |
| Marl Slate Formation | Permian | |
| Mercia Mudstone Group/Blue Anchor Formation | Triassic | |
| Mercia Mudstone Group/Keuper Waterstones Formation | Triassic | |
| Mercia Mudstone Group/Tarporley Siltstone Formation | Triassic | |
| Merevale Shales | Ordovician | |
| Middle Calcareous Grit | Jurassic | |
| Middle Chalk Formation | Cretaceous | |
| Middle Headon Beds | Palaeogene | |
| Middle Inferior Oolite Formation | Jurassic | |
| Middle Limestone Group/Five Yard Limestone VI Formation | Carboniferous | |
| Middle Limestone Group/Five Yard Limestone VI Cyclothem Formation | Carboniferous | |
| Middle Limestone Group/Five Yard Limestone VIa Formation | Carboniferous | |
| Middle Limestone Group/Five Yard Limestone VIa Cyclothem Formation | Carboniferous | |
| Middle Limestone Group/Five Yard Limestone VIb Formation | Carboniferous | |
| Middle Limestone Group/Gayle Limestone Cyclothem Formation | Carboniferous | |
| Middle Limestone Group/Gayle Limestone II Formation | Carboniferous | |
| Middle Limestone Group/Gayle Shale | Carboniferous | |
| Middle Limestone Group/Hardrow Scar Limestone III Formation | Carboniferous | |
| Middle Limestone Group/Hardrow Scar Limestone III Cyclothem Formation | Carboniferous | |
| Middle Limestone Group/Hardrow Scar Limestone IIIa Formation | Carboniferous | |
| Middle Limestone Group/Hardrow Scar Limestone IIIb Formation | Carboniferous | |
| Middle Limestone Group/Hardrow Scar Limestone IIIc Formation | Carboniferous | |
| Middle Limestone Group/Hawes Limestone I Formation | Carboniferous | |
| Middle Limestone Group/Middle Limestone V Formation | Carboniferous | |
| Middle Limestone Group/Middle Limestone V Cyclothem Formation | Carboniferous | |
| Middle Limestone Group/Middle Limestone Va Formation | Carboniferous | |
| Middle Limestone Group/Middle Limestone Va Cyclothem Formation | Carboniferous | |
| Middle Limestone Group/Simonstone Limestone IV Formation | Carboniferous | |
| Middle Limestone Group/Simonstone Limestone IV Cyclothem Formation | Carboniferous | |
| Middle Limestone Group/Simonstone Limestone IVa Formation | Carboniferous | |
| Middle Limestone Group/Simonstone Limestone IVa Cyclothem Formation | Carboniferous | |
| Middle Limestone Group/Simonstone Limestone IVb Formation | Carboniferous | |
| Middle Limestone Group/Simonstone Limestone IVb Cyclothem Formation | Carboniferous | |
| Middle Limestone Group/Simonstone Limestone IVc Formation | Carboniferous | |
| Middle Limestone Group/Simonstone Limestone IVc Cyclothem Formation | Carboniferous | |
| Middle Limestone Group/Three Yard Limestone VII Formation | Carboniferous | |
| Middle Limestone Group/Three Yard Limestone VII Cyclothem Formation | Carboniferous | |
| Middle Limestone Group/Underset Limestone VIII Formation | Carboniferous | |
| Milldale Limestone | Carboniferous | |
| Monsal Dale Limestones Formation | Carboniferous | |
| Much Wenlock Formation | Silurian | |
| Mytton Flags Formation | Ordovician | |
| Mytton Flags and Tankerville Formation | Ordovician | |
| Namurian Series Formation | Carboniferous | |
| Norwich Crag Formation | Chillesford Sand | |
| Nothe Grits Formation | Jurassic | |
| Ogof Hen Formation | Ordovician | |
| Oldhaven Formation | Palaeogene | |
| Oldhaven Beds | Palaeogene | |
| Osborne Beds | Palaeogene | |
| Osgodby Formation | Jurassic | |
| Osmington Oolite Formation | Jurassic | |
| Overton Formation | Silurian | |
| Oxford Clay | Jurassic | |
| Parrot Coal Formation | Carboniferous | |
| Passage Beds | Jurassic | |
| Penarth Group/Lilstock Formation | Triassic | |
| Penarth Group/Westbury Formation | Triassic | |
| Penarth Group/White Lias Formation | Jurassic, Triassic | |
| Pendle Grit | Carboniferous | |
| Penarth Group/Cotham Formation | Triassic | |
| Penarth Group/Westbury Formation | Triassic | |
| Petherwin Group/Baggy Formation | Devonian | |
| Pilton Formation | Devonian | |
| Pilton Shales | Carboniferous, Devonian | |
| Pontyfenni Formation | Ordovician | |
| Portland Formation | Jurassic | |
| Portland Oolite Formation | Jurassic | |
| Portland Group/Portland Stone Formation | Jurassic | |
| Purbeck Formation | Cretaceous, Jurassic | |
| Purbeck Group/Durlston Formation | Cretaceous | |
| Purbeck Group/Lulworth Formation | Cretaceous, Jurassic | |
| Ravenscar Formation | Jurassic | |
| Ravenscar Group/Cloughton Formation | Jurassic | |
| Ravenscar Group/Eller Beck Formation | Jurassic | |
| Ravenscar Group/Lower Saltwick Formation | Jurassic | |
| Ravenscar Group/Saltwick Formation | Jurassic | |
| Ravenscar Group/Scalby Formation | Jurassic | |
| Ravenscar Group/Scarborough Formation | Jurassic | |
| Reading Beds | Palaeogene | |
| Red Crag Formation | Neogene | |
| Rhwlas Limestone | Ordovician | |
| Ringstead Coral Bed Formation | Jurassic | |
| Roeburndale Formation | Carboniferous | |
| Rutland Formation | Jurassic | |
| Sabden Shale | Carboniferous | |
| Saltwick Formation | Jurassic | |
| Sandringham Sands | Jurassic | |
| Sandringham Sandstone | Cretaceous | |
| Sandsfoot Grit | Jurassic | |
| Selborne Group/Gault Formation | Cretaceous | |
| Selborne Group/Upper Greensand Formation | Cretaceous | |
| Selsey Formation | Palaeogene | |
| Sharp's Hill Formation | Jurassic | |
| Sherwood Sandstone Group/Bromsgrove Sandstone | Triassic | |
| Sherwood Sandstone Group/Otter Sandstone | Triassic | |
| Shunner Fell Formation | Carboniferous | |
| Skegness Clay | Cretaceous | |
| Solenopora Beds | Carboniferous | |
| Solent Group/Bouldnor Formation | Palaeogene | |
| Speeton Clay | Cretaceous | |
| Spilsby Sandstone | Cretaceous, Jurassic | |
| Stanford Formation | Jurassic | |
| Stockdale Shales | Silurian | |
| Suffolk Pebble Beds | Palaeogene | |
| Tamar Group/Torquay Formation | Devonian | |
| Tankerville Formation | Ordovician | |
| Tarnbrook Wyre Marine Beds | Carboniferous | |
| Temeside Shale | Silurian | |
| Thanet Formation | Palaeogene | |
| Blue Lias Formation | Jurassic | |
| Torquay Limestone | Devonian | |
| Trigonia clavellata Formation | Jurassic | |
| Upnor Formation | Palaeogene | |
| Upper Border Formation | Carboniferous | |
| Upper Bowland Shales | Carboniferous | |
| Upper Calcareous Grit | Jurassic | |
| Upper Chalk Formation | Cretaceous | |
| Upper Coal Measures Formation | Carboniferous | |
| Upper Comley Formation | Cambrian | |
| Upper Greensand Formation | Cretaceous | |
| Upper Headon Beds | Palaeogene | |
| Upper Limestone Group/Main Limestone IX Formation | Carboniferous | |
| Upper Ludlow Formation | Silurian | |
| Urswick Limestone | Carboniferous | |
| Warwickshire Group/Kenilworth Sandstone | Permian | |
| Waterhouses Limestone | Carboniferous | |
| Weald Clay | Cretaceous | |
| Weald Clay Group/Lower Weald Clay | Cretaceous | |
| Weald Clay Group/Upper Weald Clay | Cretaceous | |
| Wealden Formation | Cretaceous | |
| Wealden Group/Ashdown Formation | Cretaceous | |
| Wealden Group/Tunbridge Wells Sand Formation | Cretaceous | |
| Wealden Group/Vectis Formation | Cretaceous | |
| Wealden Group/Wadhurst Clay | Cretaceous | |
| Wealden Group/Weald Formation | Cretaceous | |
| Wealden Group/Weald Clay | Cretaceous | |
| Wealden Group/Wessex Formation | Cretaceous | |
| Weaver Beds | Carboniferous | |
| Wenlock Formation | Silurian | |
| Wenlock Shale | Silurian | |
| Wessex Formation | Cretaceous | |
| Westbury Formation | Triassic | |
| Westbury Shales | Triassic | |
| Weston Flags Formation | Ordovician | |
| Weybourne Crag Formation | | |
| Whitby Mudstone Formation | Jurassic | |
| Whitcliffe Formation | Silurian | |
| Whitcliffe Beds | Silurian | |
| White Chalk Formation | Cretaceous | |
| White Limestone | Jurassic | |
| Wittering Formation | Palaeogene | |
| Woolwich & Reading Beds | Palaeogene | |
| Woolwich and Reading Formation | Palaeogene | |
| Wych Beds | Silurian | |
| Yeovil Sands | Jurassic | |
| Yoredale Group/Alston Formation | Carboniferous | |
| Zechstein Group/Marl Slate Formation | Permian | |
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