For offices, typically a utilities bill (with your name and address on it) will suffice. Voting only requires a voting card which is sent to your address. Reg

For offices, typically a utilities bill (with your name and address on it) will suffice. Voting only requires a voting card which is sent to your address. Registration to vote is mandatory and requires your National Insurance number, but the penalty for not registering is small (a fine of £80 IIRC) and rarely enforced.