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  • Invalid National Insurance number.

    Born in Ireland, I worked in the UK from mid 1987 til April 1993 on a temporary NI number that I was unaware of til I came to buy back years of insurance contributions allowed til April 2025 deadline. I have lived in Ireland since 1993 and I have no P60's. I have written/telephoned HMRC and DWP repeatedly over the last 2 years and keep getting bounced from one to another. Surely I'm not the first person ever to have worked under a temporary NI number?.