The entire tax system requires a radical overhaul. From top to bottom. A system that favors the middle class at the expense of everyone else, is clearly not fit for purpose. Simplify the system. Close all tax loopholes. End universal benefits that favor the (wealthy) middle class. End all tax and pension perks for the middle class. For example, why is council tax lower in wealthy boroughs of London, some of the wealthiest places on planet earth, than deprived northern mill towns. etc etc. ( 
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In principle I agree that geneal taxation should be raised to fund the NHS adequately, the problem is among others, a looming black hole that is PFI, which will swallow a large chunk of it and an ever increasing large chunk over the next 40 years or so. A PFI system that is 70% less efficient than direct NHS control and 40% less efficient in the public sector overall. I want my £2 to go on frontline services in the NHS, not on an inefficient management structure and PFI laptop/desktops costing £3,000 each, that can be bought for £400 on any High-street in the UK. etc.
A banking led, service sector economy, reliant on housing bubbles for growth, is incapable of paying the bills. The socialization of capitalism, where mammoth corporations become to large to fail and are bailed out by the tax payer as a direct consequence when they do fail, is always doomed to failure in the long term.
