This is utter nonsense.
The EU does not financially benefit the citizens of the UK.
Large multinational companies based predominantly in London benefit from the free movement of people that helps to keep labour costs low.
This is good for shareholders as profits can increase as salaries stagnate. This is observable FACT in the UK, these same companies under EU law are allowed to pay their taxes in any EU state, meaning that they make the money in the UK but do not pay the tax in the UK.
Leaving the EU would not in any way pose a negative impact on the UK's economy or means/ability to trade with countries within the EU.
The UK is by far the largest consumer of EU products, it is their largest customer. Restricting trade/business simply because it choose not to be ruled from a remote clique of unaccountable name/faceless men would not harm the UK's economy.
If Mexico, Columbia and various other 'remote' independent countries can negotiate an FTA without requiring political integration, why would it not be possible for the UK, considering the financial clout the UK has with the EU?
Regarding the NHS and the smear campaign aimed at UKIP and privatisation... NHS undertook the most rapid and inefficient/costly privatisation under the Labour party, further exacerbated by the Tory party. Farage was suggesting back in 2012 to move to a more direct and transparent system, much how he wants democracy to be more direct and transparent. It would operate similar to the French healthcare service, which is currently the best healthcare service in the world.
The French system allows transparency on how much each individual person actually costs the Healthcare system. Money isn't just thrown at their system with the idea that more money fixes everything. Heck, the French are the kings of bureaucracy and yet our NHS outdoes them for inefficient costly bureaucracy.
The NHS is the sacred cow of the UK, but the NHS of today is not what people think it is. IT NEEDS to be completely restructured, but thanks to Labour and their PFI schemes, it'll be pretty much impossible to remove the privatisation without these entities taking the government to court.