Here are some potentially useful support websites from Bristol Council SEND department:
https://www.bristol.gov.uk/web/bristol-local-offer/supporting-children-with-autism-through-coronavirus-changes
https://www.bristol.gov.uk/documents/2193095/4477684/Services+and+support+for+families+in+Bristol.pdf/62150803-a7bc-fac4-9d4d-fb7eee63f4e8
https://www.bristol.gov.uk/documents/2193095/4477684/Emotional+coping+with+coronavirus+transitions.pdf/b2facd27-3d49-336d-0539-3376b124f824