One key with Disney sales is that they are all treated as Florida sales for WDW resorts, meaning the contracts and deeds are recorded there and the closing takes place there. Thus, you will sign a contract that is effective in Florida, the closing will be there, and the transaction will subject to Florida law. Atimeshare uses a reputable law firm for its sales, Holland & Knight, who will likely assure that any possible UK issues are dealt with before the closing (such as any special UK taxes the seller might have to pay) so you get clear title.