RHKAAF,
Start by telling us where you're moving to and which pension scheme do you belong to? The answer to your question will depend on that and may be different for state pension and AFPS. There are also some points about tax you will need to know about.
Originally Posted by PN
Once you are permanently abroad then you should not be paying UK tax.
Not true. For example, the Dual Tax agreement with France, means I pay tax on a UK government pension in the UK, despite being permanently resident in France.