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On this week's programme we investigate allegations against a BSL teacher. Some of her students claim she has taken charity money raised by the Reading Deaf Children's Society and then failed to deliver lessons, while her local Deaf Centre has banned her after questions arose over disappearing funds.

We also speak to a special team at UniversityCollegeLondon who have been documenting the evolution of BSL since signs were first recorded back in the 8^th century. As well as researching fascinating facts about this history of signing, they update us on some of the very latest developments in BSL.