This review of the literature considers a growing body of research evidence on autism and bilingualism that has identified how bilingual exposure for children and young people with autism can have a positive impact on their communication and language development. While much of the research on autism and bilingualism has originated in the US and Canada, the need to address this topic in UK schools has been emerging in recent years. According to the Special Educational Needs in England statistics (Department for Education, 2020) there has been a marked increase in the numbers of bilingual children on the autism spectrum in our classrooms in the last 5 years and over 20,000 children with autism who have a first language other than English. This has led to practitioners and parents wanting guidance about how best to support a child or young person who has a language impairment or delay associated with a diagnosis of autism and is exposed to more than one language at school and in their home environment or community.