Paying NI gaps between April 2006 and April 2016 at Class 2

The deadline for paying NI gaps between April 2006 and April 2016 has been extended to 5 April 2025. Is it still possible to pay for these gaps at Class 2 level if you were employed overseas during the period April 2006 and April 2016? If so, what is the process, as this is not entirely clear on the Gov.UK website. Thanks for your insights........

Hi JRHMRC,
It is still currently possible to pay class 2 for periods overseas for tax years 2006-2016.
You must apply to pay however using application form CF83 which can be found on the GOV.UK website. Please find a link to the form below:
Apply to pay voluntary National Insurance contributions when abroad (CF83)
Thank you.

Hi Can you please confirm if it is possible to pay class 2 voluntary national insurance via the new systerm (from abroad) if not will this option be added at a later date?

Hi,
If you either live abroad or live in the UK but are paying for a period when you worked or lived abroad.
You have to create a reference number for yourself, different to the 18 digit reference number that the gov.uk website asks for when you try to make the payment through the “Pay Online” Section. You Use your National Insurance number followed by ‘IC’, your surname then your initial.
Currently you can’t make a payment with this type of reference number online.
Please follow the “Make an online or telephone bank transfer” section. I am unable to advise whether this will change in future. 
Thank you.