Solved: Openreach wont drop SNR - Page 3 - BT Community
That was might long winded nightmare I had back in Feb in my old flat!
ha. For me it was a "fix one problem, create another". I think the lift and shift actually created worse problems than I had before. But apparently, cabinet ports are often the cause of a lot of issues. Though, bearing this in mind, it was strange that they were pondering whether router issues or electrical interference were causes of my drops - which, they weren't - unless my router has mysteriously fixed itself, or the electrical interference has disappeared