Was in London today at my dad's office for like an hour and the entire time I was there accross the road I saw these people putting the most random things into the loading bay of this building. Stuff like tractors and what appeared to be a small airplane rig. There were lots of people hovering around and a couple of cameras visible. I then went and asked a security guard what exactly was going on and he replied they were getting ready to film Lost. This however is a pretty big building and the airplane prop and tractor might not be connected, but thought it was interesting anyway.