I am, generally, pro donation. However have major concerns about how opt-outs would actually be recorded and this data retrieved in the event you are in a situation to donate.
This will only work if/when all NHS records are computerised. There is an opt-out system in place if you don't want your personal health records put on a huge great database which will only get hacked into, 'lost in the post' or generally abused by any nosey person in the NHS with a Smartcard. As an NHS employee, I can assure you I'll be opting out.
Anyhow, if you opt out, how will they establish what your wishes actually were? Will they assume you consented unless provided with written proof to the contrary? Will we see cases of organs being removed from someone who explicitly stated they didn't want to donate, only the doctors at the time didn't have this info as it wasn't recorded correctly or they couldn't find it?
Will those that opt out and have it recorded be subject to covert healthcare discrimination?
At least under the current system, this can't happen.