Well the issue seems to be back.
Got a call to say the broadband is running slow.
Who called you, as there are a lot of scammers making calls like this. BT would never call you to say its running slow.
Yes it was my parents who rang.
I've attached two screen shots from the dsl checker. One from last night and one from this morning. I've also attached the technical log as that shows the drop in connection when I ran the diagnostic.
I've got the event log too which shows disconnections on numerous days. There's a period after which the engineer visited where it was stable and then we get the same reoccurance of disconnections again.