NI Shortfall

msms

Whilst working overseas for many years I was liable to arrange any tax payments due to the uk

Would this suggest that I was self employed and able to only pay class 2 NI to pay for missing years

pinnks

What tax payments would have been due to the UK while you were abroad and why would that have made you self-employed? 

Be that as it may, being self-employed is not a prerequisite for paying Class 2 while abroad.  You must have been employed or self-employed until you left the UK and employed, or self-employed, abroad.

If you wish to pay NI in relation to periods when you were not UK resident you need to send form CF83 to HMRC.  If you do that before 5 April, you keep years 2006/07 onwards in date for payment.