In France you can set up a Life insurance contract (interest at 3.75% for 2010). You can add to it as you want and don't pay tax on any withdrawals after 8 years. You can then put in and take out tax free. You can leave this money there for any named person on your death (not only family) upto 152 000€ inheritance tax free. Any money added after the age of 70 is taxed on death but not the interest of money already in there.
Is there an equivalent in the UK of this?
As you have probably gathered by the lack of replies so far, the answer is no. It seems to be a very complicated contract designed to exploit a specific series of tax regulations that have no equivalent this side of the sleeve.