Sir Martin Moore-Bick has written to the Geoffrey Cox QC – the attorney general – requesting that any evidence submitted by individuals responsible for the refurbishment of the 24-story block will not be used to incriminate them. 72 residents perished in the Grenfell Tower fire in June 2017.

Moore-Bick warned that if witnesses do not gain immunity then “they will be considerably less candid than would otherwise have been the case as a result of trying to avoid saying anything that might harm their position in the future.”