The Tories are evil, yes.
However, the NHS doesn't really need 'fixing'. In fact, studies have shown that it is one of the most efficiently run healthcare system in the world:
www.politics.co.uk/news/2011/08/08/surprise-report-nhs-most-efficient-healthcare
And patient satisfaction is extremely high (close to an all-time high):
www.bbc.co.uk/news/health-12805586
The NHS can be improved, certainly, but there is no need for a complete top-down re-organisation of the health system. It's actually doing (or did, until the Tories came in to power - now waiting times are up) remarkably well.
The Tories want to introduce competition because:
a) Their buddies will make money off it.
b) They are pro free-market, small state ideologues.
Andrew Lansley's Bill will wreck havoc on the NHS, and the public will not forgive them for this.