We saw most links to BT fail at 02:30 and have since received initial notifications from BT of a major issue. We are trying to get more details.
This looks like it may be related to the previous issues in Slough, and many lines remain disconnected.
Following the BT incident our main LNS stopped responding and the working lines switched to the secondary LNS automatically. This is being investigated separately but the BT issue remains.
Looks like more connections around 3am means most customers are now back on line.
BT have confirmed the incidents closed. We'll try and get more details of what happened as ever.