It's next week's waste collection - the week of Mon 24th November. They will be halted until the week of 3rd February.
The city council says that: "a leaflet will be coming through the post letting people know all of the collection details for rubbish and recycling over the holiday."
The council's advice goes on to talk about how you can shred/recycle your real Christmas tree. We buy a real tree, but only every few years -- we just put it out in our back yard for the intervening 11 months.