Where can I find information on Merlin Passes? Please visit the Merlin Pass Website at www.merlinannualpass.co.uk You can also find FAQs via the Help Centre here. Related articles When is Shrek's Adventure London Open? I'm a Merlin Pass holder, do I need to pre-book? How do I book a combination ticket? Where would I find information about a career with Merlin Entertainments? What characters are in Shrek' Adventure London?