David Cameron's claim to back the NHS was shot down again yesterday as more Tories attacked our healthcare system.

Three of his Shadow Cabinet - Michael Gove, Greg Clark and Jeremy Hunt - called for the health service to be dismantled. They claimed it was "no longer relevant" in a book, Direct Democracy, co-authored with Tory MEP Daniel Hannan.

Mr Hannan sparked outrage last week by calling the NHS a "60year-old mistake" on US TV.

And Health Secretary Andy Burnham last night challenged the Tory leader to withdraw the whip from the MEP and remove anyone from his frontbench who opposed the NHS.

Tory MP Douglas Carswell, co-author of another book with Mr Hannan called The Plan, said he stood by his words, branding the NHS the "National Sickness Service".

Education spokesman Mr Gove said his friend Mr Hannan had "fantastic ideas".

But he claimed on BBC1's Andrew Marr show yesterday it was "nonsense" to suggest he wanted to scrap the service.

Barack Obama's stepmum Kezia, 66, of Bracknell, Berks, told yesterday how she owed her life to the NHS after suffering kidney failure seven years ago.