@Porridgecake
I agree the amount of waste in the NHS is huge. Most of it is down to rigid procurement rules where things like stationery and light bulbs can only be purchased from one supplier at roughly 10 times the normal price. Fraud is a big problem. Waste of prescription drugs, like pp mentioned, cupboards full of repeat prescriptions in (mostly elderly) people's houses that nobody has reviewed. When my elderly neighbour died we cleared dozens and dozens of boxes of medicines, all unopened. staff are careless about wasting things too - because it is "free".
The majority of the spending increase in the NHS under Tony Blair was due to his infamous PFI initiative and we are still paying off those debts today.
Income from BTL is taxed and there are very few allowances that can be claimed. Inheritance tax is around 40%.
A few years ago, a ward in our local infirmary was all over local media as the nurses had done an experiment in cost savings. They procured non medical items themselves from non NHS approved suppliers, such as local firms, local shops, online retailers, etc and saved a fortune. This wasn't on medication or other medical supplies, it was non medical stuff like toilet rolls, tissues, paper towels, sick bowls, cleaning products, stationery, and other consumables, etc. I seem to remember they saved £50k for just one ward in six months or so. Pretty shocking stuff really. Even the trust chief executive was quoted as congratulating them.