Banks all over the world are asking for this as it releases funds, that at the moment they have to set aside, so that it can be used for future investments,loans, business etc
If you do that in one hit you're looking at a circa £60k tax bill if the new tax measures happen. No interest rate is going to replace that so you're going to lose money. Invest it in a market tracker
Check out the liquidity of the Thai big players, right up there with the rest. What was the last thai bank to go under? There have been many in the west