However, if I amy, back to the Census question.
Many will say clearly they have no religion, because... the have none. Others will clearly state their faith and denomination, whatever the consequences, like pay tax that would go to that denomination- because their faith is very important to them.
For the vast majority, in the current UK system- they are very likely to say CofE, or Catholic, etc- because they were raised in that faith- despite the fact it is no longer important to them, fro,m the religious pov. but still feel some attachment, culturally, because of their background.
And the question I asked in the OP. For this last group- how many would stop and think, and not mention that Church/Faith- if it meant that they would then be obliged to contribute 8/10%?
My guess, is that most would then come to the conclusion, that their vague cultural attachment would not be enough to agree to pay a significant proportion of their salary to that Church.
And keep it for themselves, or choose another Charity or charities that have more meaning to them. (as we do, personally).
Nicola Sturgeon’s husband Peter Murrell re-arrested over SNP finances.