Average annual tax receipts have been £630 billion over the last five years. The annual average rise in tax receipts has been 3.7% over the last 20 years. That rise has been pretty consistent both under Labour for the first half of that period and Conservatives for the second half, save for 2009 to 2010 when the Great Recession impacted tax receipts and 2020 to 2021 when it was Covid. The UK economy bounced back in 2020 to 2021 and tax receipts rose sharply to £719 billion, but that is playing catch-up. These figures do not include council taxes, business rates and some other Govt receipts, but those under HMRC's collection powers. Those figures published monthly and consolidated over the 20 years are very detailed and enable conclusions to be drawn between the first half (Labour and worldwide cheap money) and the second half (Conservatives and worldwide austerity).
UK expenditure over the first ten year Labour period rose by 6.7% per annum on average. Over the second ten year period under the Conservatives it rose by 4.0% per annum, reflecting austerity. This was not a UK phenomena - the Big State affected all of Europe in the early noughties when credit was both cheap and more freely available through increased globalisation.
The UK economy has at its base two main sectors: oil / hard commodities and financial services. Brexit should not affect the former, but longer term the finance sector can expect to lose out to Europe, all things equal. It will take some time, but it is irrational to think that the EU will not establish a financial centre at least of an equal size to London. Due to the relative size of the population to oil and commodities, the UK has never been able to establish a Sovereign Wealth Fund like Norway.
Government debt is £2.23 trillion. That is the equivalent of £80,000 per household. This has to be paid back and currently the interest alone on government debt is costing every household just under £3,000 per annum.
In my experience, the Labour period from 2001 to 2010 was characterised by Big State, cheap public finances and poor management of the black economy. Gordon Brown was at the helm for that. Margaret Hodge (Labour) has consistently lobbied for tax reform to close the tax gap for the benefit of taxpayers. The Conservative period (mostly Osborne) has been characterised by austerity, levelling taxes especially across middle earners who now pay relatively more and closing the tax gap through legislation and 'fiscal drag'. Both governments responded to the macro evidence at the time and either would have acted the same at those times.
We no longer have a global economy. Covid, Ukraine and the polarisation of democracies, autocracies and the BRICs club means the UK (and the EU for that matter) need to get far leaner on public finances and take some control for the strategic direction of our economy. Liz Truss's mandate worries me. With inflation being fuelled by factors out of our control (and within the control of others) this is not a time for any state to be giving out tax breaks under a perverse belief it will grow the economy. Handing out tax breaks is not investment. It will fuel inflation and make the deficit larger. The £2.23 trillion of debt does not sit in some illusory vacuum. It needs a plan.