there's also an optout aesthetics (optout art??) idea/event on:
http://arty.li/ZMo
9th paragraph:
" unless people choose to opt out via their family doctor "
That's both useless and inconvenient. Their site even says a doctor might not actually do it, and having the optout so hidden in that way would violate the spirit of not the letter of the Data Protection Act. It's also a huge waste of time and money on the NHS, which is already expensive and overstretched.