The first step towards protecting the NHS is stop blaming a political party in particular - they all want to trim back state involvement:
Above all, it is the government’s slashing of NHS funding that has caused the crisis. It has imposed £20 billion of “efficiency savings” to the £108 billion NHS budget. These cuts, first proposed and begun under the previous Labour government, are resulting in the closing of dozens of NHS hospitals and A&E units across the country, ignoring the massive opposition from the working people living in the surrounding areas and health workers who work in those hospitals.
Giving examples of proposed NHS patient payment schemes, it continued, “Earlier this year the King’s Fund, an influential think tank, argued for charges from £10 to £25 for doctors’ appointments and to attend A&E department. Lord Warner, a health minister under [former Labour Party prime minister] Tony Blair, has backed a £10-a-month NHS ‘membership’ fee.”
www.wsws.org/en/articles/2014/07/09/heal-j09.html
In a link I gave on another thread, it stated that this slashing of [all] public services is happening all across the EU as it is part of the overall aim to reduce government expenditure and put essential services into the private domain; think carefully before voting to remain within the EU.
I'm not sure why the blame is being put on the Tories when these cuts were first proposed by Labour - it is the cuts that need to be challenged, not who is proposing them.