Looks great. Unfortunately I'll be leaving early Thursday afternoon, though.
I looked at the Meantime Tuesday tour but I'd have to leave about 30 minutes after the general session opens up so I just don't think Meantime will work out for me. Sambrooks looks like a proper small craft brewery and is close to Earl's Court, but the 10 person minimum for a tour is a bit of an issue right now.
I'm booking Fullers for 11am on Wednesday as it's only about 10 minutes from Earl's court by taxi. 10GBP per person if you book online in advance.
Brodie's in London has an AMAZING beer line-up but looks incredibly small and I don't think they'll have anyone hanging around the brewery while GBBF is going on.
Adam