Ok, everyone else is having a jolly party nowadays (Clegg excepted), so maybe we should too. Don't know why it's not been thought of before. Anyone and everyone invited, just the obvious rule that you must bring something along (yes, even Jesse Bigg). Feel free to engage in small talk and inappropriate liasions, but please leave the fighting until later. If it's a success, it might get resurrected next year.
I've brought along an Aldi superpack of sausage rolls. They weren't touched last year, so they'll still be Ok if you brush off the green bits. Being ever so generous, I've got 5 litres of home-brewed barley wine, made by mixing barley with Lambrini. Not tasted it yet, but I've got hopes.
[edit: this is a VIRTUAL party, where even CC deniers are welcome]