Totally agreed. After I lost my login details to sign into HMRC portal to do my self assessment, it was almost impossible to recover my credentials. Impossible

Totally agreed. After I lost my login details to sign into HMRC portal to do my self assessment, it was almost impossible to recover my credentials. Impossible over the phone as they wanted to send a paper letter to my address and I was just moving to a new place (and doing some travel before that) so I had no more access to the address HMRC had on file. I finally gave up and just asked my accountant to do it on my behalf. He somehow managed to sort this out with HMRC. There is no flow to recover your username and password (or generate new one) with your email address which is maddening.