[Stooky Bill]

10:55 according to a516digital, slightly later than the previously mentioned 6am cut-off.

The EPG listings ended at 6am, thats the end of the broadcast day so you'd expect that

When the HD channels were shuffled and brought on air it all happened during the working day as that's when there's staff in to do the changes at all the organisations involved. No point paying lots of people extra to come in overnight