Protect your pension :
Austria
Protect your pension
As a UK citizen you are entitled to a UK pension when you retire. This can and will be paid into your bank account anywhere in the world. However, whether you get a full or part pension at retirement age depends on your contributions.
Be aware that you are able to pay into a private pension for 5 years after you leave the UK, however advisers also suggest that you consider paying voluntary NI contributions to preserve your state pension entitlements.
You can find out how much to pay by calling the HMRC International Services Helpline on +44 (0) 845 9154811 giving them your UK NI Number. There are many ways to pay, the link below will be of use.
HM Revenue & Customs - Paying NI from abroad
There is also an agreement between Austria and the UK whereby any pension contributions made into the Austrian state pension system can be taken into consideration for your UK pension if/when you return to the UK and vice versa.