If you're in South Yorkshire there are a few decent local bricks around here:
http://maps.google.co.uk/maps?f=q&so...05681&t=h&z=18
Many come from the old Orgreave coking works buildings, and there's a lot of spoil and coke to rummage through from the old Treeton Mine / Orgreave Colliery - coke works.
That place was an urbexer's dream. Very much like Wallerscote, but had a big engine shed round the back full of diesel engines, dodgy bridges over rivers and slurry ponds. Me and my mate spent many an hour in there.