When put into effect, investors in Alternative Investment Market (AIM) shares will be able to avoid capital gains tax, income tax, inheritance tax and now stamp duty.

FORBES: UK Eliminates AIM Tax -- Could Help Tech Entrepreneurs

It is likely that such taxpayers also pay a big proportion of stamp duty, capital-gains tax and inheritance tax.

ECONOMIST: London risks losing its global appeal

Mr Osborne has made populist pledges to cut stamp duty for first-time home-buyers and to exempt more people from inheritance tax.

ECONOMIST: David Cameron