Hi Moideen Kunju Abdul Rahim,
If your wife was not employed or self-employed overseas then she will not be entitled to pay the voluntary class 2 contributions, she may, however, pay voluntary class 3 contributions.
If she could send us a letter to detail her period overseas (from … to …) and the country involved, we will be able to update her National Insurance account and detail any voluntary contributions that she may pay. She should also include her National Insurance Number and address.
Before deciding to pay voluntary contributions I would ask that she obtains a State Pension Forecast which will detail her current and future entitlement to a State Pension and will explain if it is worthwhile to pay voluntary contributions. She may obtain this from:
Check your State Pension forecast
Thank you.