Actually workforce participation for working-age people is at its highest since it began being measured properly in the 1970s.
The benefits system needs huge reform to become contribution-based (with the exception of disability benefits) and the tax system needs changing immensely to incentivise work. But the primary problem with the public finances is productive areas that would generate growth and productivity rises (the only way to increase living standards) being starved of investment because over 50% of public spending is going on 15% of the population: retirees. Many of whom do not require this. It is the over 65s who are addicted to state support and have strangled the economy, and refuse to let go of their vice-like grip on it to enable the changes that need to happen, despite having paid - as a cohort - £200k less per person in tax in real-terms over their working lives than is required to fund the services and welfare they are demanding to extract from the state (a figure rising every year).
Until this fact is accepted there will be no way out of the doom loop. The fuss recently over £5bn of cuts to benefits for disabled people when £80-90bn per year is being paid in totally unnecessary welfare to wealthy retirees, and the NHS is consuming an ever larger share of public spending to extend lives for very elderly and sick people far beyond any quality of life and who often do not want this while working-age people can’t get treatment they need, is completely unviable.
Nothing will change until this is addressed and I’m afraid that there is no further way to tax the way out of the doom loop because the peak of the Laffer Curve has already been passed, and such tinkering is ineffectual and pointless anyway because it will make no substantive difference to the productivity issues or generate growth so all that is being done is depressing growth further with higher taxes and funnelling that into unproductive spending that won’t generate any growth.
Therefore, unsurprisingly, the next year and the next year and the next year you’ll find that tax revenues have shrunk further, productivity isn’t rising, inflation has continued to increase and living standards fall further and they come back saying they need more and continue the doom loop.
Or you could be insane enough to vote for Reform and make the doom loop spiral a vertical jump at terminal velocity with no parachute.
Or, the UK electorate could grow up, learn something about economics or at least listen to those who do, stop voting for mouldy unicorn cake, get a grip on basic numeracy and instead squabbling over irrelevancies like disability benefits or illegal immigrants in hotels or MPs’ expenses or bankers’ bonuses or whatever the other irrelevant rounding error of the day is being focused on actually engage with the real issues that need to be addressed if they want any prospect of living standards rising in the future.