It's going in the location where the London Film Museum was, I may have got that name wrong but it's similar.
County Hall will contain Merlin's SeaLife London Aquarium, London Dungeons, Shrek, London Eye Cinema & Ticket Office. Also in there will be the McDonalds and the Arcade.
Makes sense and with DreamWorks now hinting at Shrek 5 it makes even more sense.
Merlin already do combo tickets and with all the above within a 3 minute walk of each other and do able in a day they'll really cash in. On another note, it's one more thing for me to use my Merlin Annual Pass on!
Regards the actors, it's not been an issue for the Dungeons so doubt it will be for this either.