My apologies, but still doesn't get away from the fact that lots of people did pack up the Friday of the previous week, whatever the date, rather than bother with turning out for a day or two at the start of the Christmas week, which I don't think will be the case this year.
You're right. All those people with benevolent employers are gonna miss out. Diddums!
(Oh hang on.......Boxing Day falls on a Saturday this year, so they've got a BH Monday on the 28th to look forward to. Wonder what the arrangement for rail staff is. I bet it's lucrative....)