RetireJapan

Just found out on HMRC website that I can make voluntary contributions going back to 2006/7.

Thanks for the quick reply. I will look into it.
BTW someone recently told me that in Japan tax is payable on income from pensions. Is that actually true? Including the Japanese state pension?

I will be 60 later this year, so I wonder if it would be worthwhile, or even possible, to start making back-dated contribution to my UK state pension? I've left it too late, haven't I?