Went to Cheshire Oaks last night, and stumbled across Paint Shop Pro X for just £10 in the WH Smith Outlet Store. I imagine that this is only available in the outlet store, so only really of use to anybody near to Cheshire Oaks, although it could be at other outlets I guess. They are currently up to verion 12 but this is still an excellent piece of software which is usually much more expensive than this, especially for the retail box.
They had about half a dozen copies in the shelf when I bought it as the shop was closing!
Hope this is helpful to somebody.