You can search North Somerset Council's interactive planning map for policies that apply to Bleadon: http://map.n-somerset.gov.uk/dande.html
Below is a selection of maps (PDF format) relating to Bleadon that you might find useful.
Bleadon - Sites of Special Scientific Interest (SSSI)
Bleadon - Area of Outstanding Natural Beauty
Bleadon - Common land and town or village greens