I was in touch recently with the Dept. of Work and Pensions to make voluntary contributions. They posted out a UK state pension forecast, and they also asked me to complete form NI38/CF83 which I have done. (when I was filling out the form it did not feel like the form was geared towards non-residents). Anyway, I am hoping now they will get back to me with the total cost to top up for the missing years to take me to the minimum 10 years.I have just gone through this process myself. Very simple process to obtain projection, they specify the missing years.
The key benefit is that as a non resident you pay class 2 national insurance rates rather than the more expensive class 3
Voluntary National Insurance contributions and the State Pension | MoneyHelper
Voluntary National Insurance contributions can help make sure you have enough qualifying years to get the full State Pension. Find out more here.www.pensionsadvisoryservice.org.uk
Just cheking if I am on the right track. Is this the form NI38/CF83 the last thing that you also sent to them?