BSL was recognised as an “official” language by the UK government in 2003, but it does not have legal protection. This bill, if passed, would change that, meaning public services would be legally required to follow guidance on how to put BSL in place.
Article source: https://www.huffingtonpost.co.uk/entry/british-sign-language-bill-commons_uk_623457b3e4b0f1e82c484e3a