On the one hand you could argue we must stay beholden to the finance sector etc because we can’t afford to lose the tax revenue it generates.
On the other hand the very same system drives profits above all else and disproportionately benefits a tiny minority.
Part of the reason public services are struggling and taxes have risen is the growth in the wealth divide, the reduction of social mobility and the growth in poverty.
The same system that is generating tax revenue is also contributing to the increase in those who can no longer reliably afford housing, food, utilities etc despite being in employment (and so have to rely more on the state).
Quite simply it is increasingly difficult to earn a living wage due to the cost of living. Reducing the tax rates a bit won’t really help people or public services whereas say, capping rents at max a fifth of the average income, might. No party has so far been willing to overhaul the rental market.
There are things that could be done - tax residential property owned by corporate/investment vehicles effectively; tax property owners who let multiple properties effectively; tax property investors on global asset wealth etc.
Right now we have a system that is increasingly benefiting the wealthy minority. You have to ask yourself whether this country can afford to continue to be the favourite tax efficient investment vehicle for that minority.