Buying Overseas
Just remember that your "Pension" is classified as a "Government Pension"; and that, no matter where you live on this Planet, HMG
WILL continue to tax you in the UK on that Pension.
So No 1 Priority is, if you intend to reside overseas, to ensure that there is a "Dual Taxation Treaty" between your "Residence of Choice" and UK. It may also be benificial to "commute" the maximum dependant on Taxation rates; but one would need Specialist advice on that.