tuga
Legal Alien
I think it's safe to say that allowing UK child benefit for more than two kids is not going to create an overpopulation problem in the UK. Therefore capping it is simply performative cruelty, pandering to feelings of smugness and vengeance in some of the electorate. Not civilised.
I'd more easily set a ceiling for the highest pensions. And another for the highest salaries (£250k/year?).