[Stooky Bill]

No I think its News Channel for everything except Breakfast. Its what you see if your regional news fails mid-programme or with no notice, which thankfully is fairly rare

Surely it is now BBC London at 6.30 and 10.30?  Ever since it moved to Studio B last October, London viewers have had a gap of about two seconds before the regional news starts, whereas the regions begin much more quickly, as does Sportsday, implying that it is London that is now carried on network at those times.

A few weeks ago there was an occasion when BBC London began much more abruptly than usual, and Scotland and Wales both caught a quick glimpse of the London presenter before their programmes started.

Additionally, during the headlines sequence, the final national headline caption can still be seen sliding away when the London presenter has appeared on screen.  Sportsday continues to be the default at lunchtime.

The two second gap was always there before Studio B, it was just it didn't affect BBC London before as they could start whenever. Now they have to wait for everyone to opt out as their bulletin comes from the same studio. That includes 'network' BBC One who cut away from Studio B to take the News Channel 

So Studio B goes from being a source into BBC One to a opt out of BBC One. 

If Scotland or Wales caught a bit of BBC London then possibly London started a bit early and both them and the Network BBC One were caught out. The thing about the end of the news is that it's a manual take for everyone - both those opting out and the director who's taking the next event which simultaneously puts News Channel on BBC One, and the red slates on HD England and SD Nightlight. The nations and Red Bee use the same playout system and I believe there is a few seconds delay in pressing take and it actually taking the next source so it has to be timed well

Caveat - I'm pretty sure this is the case, I've not been in a position to see what happens at 6:30 for a few weeks