You can purchase combination ticket/s for Shrek's Adventure! London + additional London attractions here. You will be asked to select which attractions you want to visit and the date and time to visit your first attraction i.e Shrek's Adventure! London.
Once you have made your booking, your email confirmation will include a link to pre-book the other attractions - You will be required to enter your Order Number and Email address used when booking to log in to the Booking Portal. You have up to 90 days from your first attraction visit date to visit the remaining attractions.