Earlier quoted context omitted.
Well, no. Only a small minority of people are on Universal Credit. I don’t get how this follows, at all.
If you take out pensions(~100b gbp), the UK spends (very) approx. 100 billion pounds a year on social assistance. I think OP is suggesting taking that 100 billion and dividing it evenly among the people of the UK vs specifically to the folks who have applied.
I like how you distinguish between the people who are eligible and the people who have applied, because some eligible people do not know they are and therefore do not apply.
It is brought up in the press [1] from time to time, and the percentage in France is somewhere between 40% and 50% of the eligible people, which is huge!
[1] in French: https://www.leparisien.fr/economie/votre-argent/aides-social...