Dodger, there are legal ways of doing it - for example, you buy them property, usually through a trust to start tax avoidance down the line, they then rent from you at a peppecorn rent that falls within the amount that you can give them per year, i,e, you give them the money to pay youthe rent back.....They also become a benefactor of the house on your death - and yes, keeping a portion of the funds to cover liquidity of duties needs to be done. Financial advice is essential and something that Camelot provides.
However, one of the first things that I would do is to arrange my own team of advisers/(Tax/Wills and Testament Lawyer/Investment bankers and a neutral adviser such as a trusted friend (say one of mine who is a CA or a lawyer - and perhaps even both). And then I would buqqer off for a wee while to let any hoo-haa re the press and scroungers die down and ask them to bere for proposals on my return.