A great list Alex, 2000 Miles and Happy Xmas (War is Over) are favourites. No Mariah Carey, phew! Thumbs up for Slade.

One of my favourites, though not strictly a xmas song is George Harrison's Ding Dong. A New Year's song that still makes it onto the supermarket playlist at this time of year. One of the best film clips ever!

https://www.youtube.com/watch?v=SrXswIbWA7Y

Apparently, that's John Lennon waving his arms at the 3 minute mark, and I'm pretty sure he's growing his own Christmas tree at the start, so perhaps it does qualify.