It's a tricky issue, the NHS is probably understaffed and underfunded but also extremely expensive already. Massively gutted isn't really true: Spending ( % GDP) has decreased but levels are still at record absolute spending

Nurses are to the UK what Soldiers are to the US, any criticism of the NHS is effectively shot down as Capitalist propaganda. There are some serious questions to be asked about the NHS, which arguably cannot be answered (Even if the result is staying with the status quo) due to an extremely sceptical and anti-capitalist left wing.