To be generous spirted, Casdon, I think the point you are making is that all MPs are allowed to accept donations and declare them, which is common practice. They are not intended for personal use which is where Starmer has gone wrong; clothes, glasses, accommodation, tickets etc and particularly clothes for his wife, plus having accrued more money than any previous Leader of the Opposition.
Apparently Sunak, not a favourite of mine, travels down to Southampton to see them play, and buys his own ticket in the Stands.