This. Never going to happen though
I know that many people (even just across the UK), would either disagree with this list, or with the various % that should be attributed to each. One persons 'prudent' would be another persons too much/little etc.
By far the largest categories are Social protection and Health, followed by Education, Debt interest and Defense. I guess you want to increase infrastructure spending. So the question is, what are you going to deprioritize?
Source: https://www.gov.uk/government/publications/spring-budget-202...