My speeds have dropped since last night to 0.1mb/s and a 3880ms ping

But at least it's connected at the moment. Although the router says it's connected at 77616Kb
It's odd as I can hear no crackling on the line at the moment.
I guess we'll have to wait and see what BT openreach say when they come out next week.
As for plates and bell wires, I'd try having a look at those myself but I'm not confident I'd see well enough to mess with it.