The new non-residents capital gains tax is now finally in place and we can be reasonably sure it will never go away. Taxes rarely do (although I do remember development land tax being abolished in 1985).
Most non-residents who have an interest in a UK residential property will now be liable to capital gains tax on its disposal. This might catch out a few non-residents because it will also apply on a disposal by way of gift and on deemed disposals. We know all about those concepts here but they might come as a shock to some foreign owners who are unfamiliar with the principles of UK tax.
However the tax will only be chargeable on the increase in value from 6 April 2015. This will be done either by rebasing or by an election for time...