I commented on the video, surprised there was no apology over the ident, and was told this was probably because the announcement was recorded. I thought all continuity on BBC One and Two was live, even in the nations?
The announcement was not pre-recorded. The announcer is also the playout director in Scot/Wales/NI. The playout system will have been pre-programmed and the announcer/director's priority is to correct the problem. The timings in a junction like that will not change - London will still start the next programme at the planned time, so incredibly difficult to adjust your script at such short notice and also try and deal with the fault. At a guess, something went wrong with the playout system (from my own observations, there has been a significant increase in playout issues since the new playout gear went live a few months back).
There was no announcement over a BBC Sport graphic in another junction later in the evening.
denton and dbl gave kudos