Ok, using the rather good
ukclimbing.com cragfinder (despite Cocktalk, they have some quality databases on ukc/rockfax)...
your nearest bouldering is:
Codmore Hill Rocks which is encouragingly described as "Rocktype: Crumbly rubbish", and your next nearest, at a mere 48m, is Swanage.
So, nothing truly local I'm afraid :cry: