@TheNewLook
Restrictions will be lifted in time for for Christmas. I’m certain of that. They’ll close pubs and restaurants two weeks before Christmas and announce that people can meet in private homes only. Boris will not want to be the PM who cancelled Christmas.
Not everyone congregates with more than 6 at Christmas and not everyone even celebrates so the current limitations, or even stricter such as back to full lockdown isn't 'cancelling Christmas' so Christmas shouldn't be a trigger for lifting/changing restrictions if the science indicates that this is unwise.
The current increase in cases is most likely to be to people not following the guidelines (people should still social distance when meeting people they don't live with for example, but many aren't) and we're currently at risk of it getting a lot worse before it gets better.