Yahoo has been running an OpenHackDay in London since 2008.
I suppose I should have googled it first, but in my excitement to get things going I just jumped at what seemed like a great name (and it is).
So, I am hereby changing the name of tomorrows event from OpenHAckDay to LocalHackDay.
I like that better anyway!
No matter the name, I hope to see you there tomorrow.
More details here