Sorry, I wanted to add to the thread where people were discussing NI contributions on German tax returns but I wasn't able to post there. So I've had to start a new topic, as follows:
My Finanzamt have told me that I can't set my UK voluntary National Insurance contributions against tax in Germany. Their reasoning is that Germany will not be entitled to tax my UK State Pension when/if I ultimately receive it. Can anyone tell me if this is correct, please?