Earlier this week, the Office of Budget Responsibility released a document about lots of stuff. Para 35 (sad I remember) refers to the over estimates of North Sea oil stocks. My worry for the integrity and security of any preserved pension, held north of the border would be based on what happens, not in 10 years, but in 40.
In times of national crisis, when all the current politicians are in the 80s, will they really give a damn when the law has to be changed due to extenuating circumstances? Pensions south of the border (state, occupational or private) are nothing more than vehicles. If there's roadworks to be done, as we've seen, you might sometimes want to get out and walk.