I have big trouble in using the HMRC service. I have registered as NRL and be given a UTR. I am able to log in the HMRC but no more - I cannot update my personal particulars or even use the service as EVERYTIME I am asked to enter my National Insurance No. I am not a UK resident so I will never have such number. May I know how I can update my personal particulars as I have just recently moved and I do not want to miss any mailings from HMRC. Please advise.