The most recent version of the UK Biodiversity Action Plan habitat definitions are available from the UK BAP website.
The update of the definitions include some habitats which have been recently added to the UK BAP including:
Open mosaic habitats on previously developed land
Inland rock outcrop and scree habitats
Upland wet flushes, fens and swamp
The 4 habitats above are also new to the Shropshire BAP list.