voluntary contributions to get full pension in future

I just moved to UK and paid for my first year's NI. Per information on my own account page, I will not able to get full pension (since I wont be able to pay enough years). As the page shows I have no gap year, may I know any way to pay for the missing years as if I would like to get full pension when I being retired in future?

Hi yipchunyu,

I am afraid you cannot pay NICs for years prior to your arrival in the UK.  
If there is a shortfall for the tax year during which you arrived, you can make a payment for this year, but not for any earlier ones.

Thank you.

Thanks a lot. So, seems the way to increase the pension for my case may be delay the start date. Anyway, it's too far away. Let me handle it when I come close to retirement age then.