A clarified 2019 edition of Approved Document B (Fire safety) was published on 5 July 2019 and came into force on 30 August 2019. It had been redrafted to clarify its language and content in line with the style guide for approved documents. The government said that it was important to note that no new policy was being introduced as a result of this work and that there were no changes to the technical guidance within Approved Document B.

Corrections were subsequently made to the Document and it was reissued with effect from 19 September 2019.

https://www.gov.uk/government/publications/notice-of-correction-to-approved-document-b-2019-edition-circular-032019 and