Chessington Zoo was developed by a group that is now part of what company?
Chessington World of Adventures:  Historically opened as Chessington Zoo in 1931, a theme park was developed by The Tussauds Group alongside the zoo, opening on 7 July 1987, as one of the first themed amusement parks in Britain. The Tussauds Group: The Tussauds Group is now part of Merlin Entertainments, the world's second largest leisure group, after Disney.
Merlin Entertainments