It seems to be back again now - at least I can ping my livebox (I turned on response to WAN ping before I left home this AM). I won't be able to test it properly until I get home tonight.
As I mentioned in another post about server status, my service is down. My BT phone line is working and the Livebox status page says it's connected but no internet.
My broadband went down last night and I am now trying to find a server status page on the Orange web site. I can find references to it on Google but no links.