Where to buy tofu or beancurd in the uk?

To be precice somewhere near crystal palace to beckenham area. I am not a veggie, but i do love tofu. All the super markets have loads of yougurts and soya milks and blah blah of all disptions and of couse the token pretend meat ofered by mcartney, I just want a big block of bean curd!! anyone now of a super market around this area that has it. Rather than going to a chinese super market just for it. Many thanks