I was literally just thinking about this. Every Sunday me and my dad used to walk from Selly Park and up to the Brittanica cricket pitch (near the Scientology bollox) and down back to the cricket ground and up the Pershore road. No one said hello.
Yet, do the walk on Christmas day and everyone turns into Graham Norton on Friday night.
I guess us Brits are a bunch of introverted sods until a few Bailey's.