Probably can't go this year. We've always done the half price deal, to take the children for dd1's birthday treat. But they've silently abandoned the half price deal this year, and aren't answering emails querying it.
So we'll do something else.
We're going!! woo!! Think we're going Fri - Mon. We're staying at the Premier Inn in Hammersmith, it's really cheap for London, the staff are fantastic and the food was really good. I highly recommend it. You can also get a bus straight from opposite the hotel, there's one that goes passed Olympia, and you can get one to Hammersmith centre to get into the city.