This question is a bit how long is a piece of string sorry
What is the city of London like on the 23rd of December?
We've been invited to something in the Bank/St Pauls area, but it would involve a bit of a trek. I think we would drive to our friends and get the train from there. I'm not sure how reliable the tubes and trains are likely to be for us to get back out to the car and then back in time for our evening event without a mega rush
Have asked Google, but some people say it's really busy and some people say it's really quiet.