Update to census dilemma,

I've just received my password notification in the post .
In the information leaflet it states quite clearly that it must be completed by law if you do not or supply false information you could be fined up to ?1.000.00 . Some questions are clearly labelled as voluntary , it is not an offence if these aren't answered .

In a sectioned titled , " Answering separately from you household " . It states a second access code can be requested so a separate form can be completed .

So to answer my own question the UK government has obviously thought the implications through and offered an alternative solution .