We've just had a blip causing ADSL lines to drop of and reconnect, this also affected routing for about a minute.
More info to follow shortly.
The issue affected both BGP links and LNS traffic, cauing lines to reconnect. Not all lines and services were affected. The lines have reconnected quickly, and the problem seems to have cleared without any need for any intervention from staff.
We are investigating the cause - this looks to be something external that has triggered this. We are trying to find exactly how this has happened so we can avoid the issue in future.