Was it just me or did anyone else notice any problems with the sound in the Christmas special? To me, the volume on the mics of the judges and the presenters seemed very low compared to the music. Am I right or wrong?

Was it not just the usual problem with Freeview HD? Happens on many programmes and also other channels and has been doing so for years.

Over here in the Netherlands it was the same. My provider uses the HD Sat feed.
Had to crank the volume up to almost max and use the enhance voices setting on my sound system.
Sometimes it's good, but most of the time the sound is crap.