Review and change their new policy for Autistic children. Stop requesting for a letter from a child's doctor or consultant stating they can not queue for rides. Original copies of either an EHCP and or DLA should be sufficient enough.
Why is this important?
Merlin are now essentially discriminating against families with Autistic children by expecting them to provide even more proof of their child's disability and are being ignorant to their disability. Private letters from doctors need to be paid for as well. Lastly, the NHS, doctors and the child mental health teams that work with Autistic children and their families are already massively overworked and under funded. They should not now be having to write private letters to theme parks clarifying information that was part of a long winded diagnosis.