False. The problem with the UK is that middle class expenses are much higher because what was provided by the state at highly effective cost is now a cost they bear privately.
Housing and education is expensive because social housing was sold and marketised removing an anchor on rental and ownership prices.
Expensive finance enabled the marketisation of tertiary education and so now instead of no debt, middle class graduates have ~$100k.
Healthcare is being sold to, again, enable marketisation.
This all leads to a middle class that is legitimately worse off that it was. Nothing to do with taxation, everything to do with the removal of the social provision of a ladder into middle class for the next gen