
Courtesy of [A brief guide to the public finances – Office for Budget Responsibility]

Courtesy of [Guidance and methodology: Benefit expenditure and caseload tables – GOV.UK]
Salient points:-
[1]. £138bn of borrowing to bridge the gap from Tax Revenue into HM Treasury and HM Government spending is £11.5bn a month. Yes, the Government has to borrow £11.5bn a month as tax revenues are not enough.
[2]. Government spending on Welfare = £322bn and total Government spending of £1370bn means:
(£322bn/1370bn) = 23.5% of all Government spending is on Welfare payments.