Same symptoms exactly, last night. Edinburgh ESMOR. Was on ptw-bng01. Now on ptn-bg02, all looking well now, touch wood.
I'm not sure how exactly to interpret them, but the broadband usage graphs at
look very choppy. As usual, not a cheep out of Plusnet: everything fine, issues resolved, not our fault anyway, nothing to see here.... . (And, as usual, this coincided with me trying to investigate a completely unrelated wifi problem in my house. Why do these things always come in pairs?!)