The state of public services suggests to me that there isn’t enough money to pay for them. Sure there are inefficiencies, but in my experience no more than in the private sector. You can run a library or youth service efficiently, but when there isn’t enough money to keep the service going at all it doesn’t matter how ‘efficient’ you are.
The total tax take has fallen for 40 years and we now see the result. Funnily enough the biggest fall has been from the wealthy and corporations. Who’d have thought it?