What the Prime Minister now proposes is effectively the nationalisation of the body - with a new 'right' to opt out of the otherwise automatic procedure that your corpse will be stripped of organs for recycling. I am squeamish at the suggestion that my dead body is grabbed by the State, a bit like a biological inheritance tax, unless I take the step of withdrawing my 'presumed consent'.
As a matter of philosophical principle, the State should presume my consent for nothing unless I specifically give it. Each of us has the right to decide to give this consent if we so choose - not a duty to inform the State that we wish to withhold it. The idea that a Government that loses 25 million names and bank account details should take anything for granted about the fate of our bodies is pretty chilling.