“… Originally we/our accountant tried to register is (sic) for Self-Assessment back in October 2015. This was unsuccessful so our accountant made further attempts in November, December and again in January 2016. Our accountant was concerned that since neither of us had a UTR we would be unable to file an electronic return in time, therefore he contacted HMRC to explain the position. He was informed that the best thing to do would be for us to pay our tax with our national insurance number as a reference - which we did on 29 January, and for him to send in paper copies of the tax returns which he did. Assuming everything was fine we didn’t hear anything until the summer when we were issued with penalties from HMRC for not paying on time.