MCM Comic Con

MCM  is one of the big organisers of Film and comic cons. 

London is one of the largest on the convention circuit and is held in May and October at The ExCel venue.

 

 They also hold them in Glasgow, Manchester. They do offer complementary carers tickets with proof and Timed Entry for more information on what you need and how to apply here is the link.

https://www.mcmcomiccon.com/london/accessibility/