If there's no organisation with the wit to organise a mail-out with opt-outs, then I guess this is the only solution.
I will be down the polls on 4th june, whatever I happen to feel on that particular morning about the gravy-training Westminster mob, to register my vote for one of the 'I don't care, but this vote counts as turnout, and might therefore stop those cockroaches qualifying for the right to send faeces-in-writing to my home' parties. I will have to hope that there are enough other people out there who do the same.
Charlie Brooker on form as usual! Thanks for that, Vipes. Cheered me up no end.