Besides, surely the £350,000,000 a week we have saved by leaving the EU is now being used to restore the cradle to grave concept of the NHS. Isn't it?

This one again?

Apart from the fact that the bus did not say that the whole £350m would go to the NHS, a quick check with a reliable source gives the NHS Budget as £137.4bn for 2016/17 and £159bn for 2021/22 a rise of £20bn (in real terms). £350m p/w for 52 weeks comes to just over £18bn

Details taken from here: