"Mr. Brown, we would like you to wipe your bum on a piece of paper and post it to us."
The NHS FOB (Faecal Occult Blood) test rollout in the North-east started in February 2008, and now it's my turn. Today I received a letter explaining the test and it's implications. There's a website which explains everything, but you basically do what I've put at the top of this missive.
It's encouraging that the NHS is taking on more proactive practises - especially where there's a possibility of cancer.