[Margaret Pilkington]

Because you think it is unethical does not make it true Neil.

Donating organs after death should be a positive informed choice...and not an opt out sort of decision.
That sort of ploy is used by companies that give you two weeks free trial of something, but take your credit card details knowing full well that they will capture the unwary by inertia.

It won't be long before blood is taken at birth to determine your HLA so that they can determine which organs will be suitable for harvesting...I distrust the state.

If you are OK with implied consent, then you have no problems.(or at least, none that you can recognise)