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BTEurope
 .Western Europe
 ..United Kingdom
NTGreat Britain
 Isle of Man
 Northern Ireland
RTAberystwyth Grits
 British Virgin Islands
 Ballantrae Complex
 Speeton Clay
 Barton Beds
 Barwell Meteorite
 Bembridge Marls
 British Geological Survey
 Skiddaw Slates
 London Clay
 Lower Greensand
 Sherwood Sandstone
 Oxford Clay
 Penrhyn Slate
 Shap Granite
 Upper Old
SNComprising Great Britain and Northern Ireland. Indexed with political divisions as applicable.