I seem to be the person starting the most threads in this subforum. Anyways...
I have just heard from the St Christopher's Inn that they will not be honoring my booking for this date as they said they had taken a previous booking but it had not been entered in the diary. They said I could book the following Saturday but I feel so annoyed about this that I'm going to look for another central London venue. I'll post when I've found something - I'm going to try the Cittee of Yorke in Holborn and the Artillery Arms near Old Street as starters. There are also quite a few large pubs in Docklands - relatively easy for me but I'd want to canvas others on a move to that part of London.
My attitude is if you can't honour a booking you don't deserve my money.