Seriously though, due to DH particularly and my inclination, we would relocate, and I wouldn't want to hang onto a property in Scotland even by letting it out. Its too much hassle, I'd want to make a clean break and buy elsewhere, so I'd rather sell as quickly as possible, at as small a loss as possible.
Its also too risky to keep a property in a country where you don't know what laws the government will pass relating to that property, where you have no property rights protection from the ECHR and you don't know what the economy is doing.
DH and I are in our forties and we need to get our future sorted out (again, thought we had done it). We can't risk spending the next 20 years of our working lives in economic turmoil, on tenterhooks, with a property we wouldn't want any more, all for the sake of a country we didn't live in any more.