evidence: A summer of discontent proved to be the downfall of Police Service of Northern Ireland (PSNI) Chief Constable Simon Byrne. [...] It was on 1 June that the Northern Ireland Policing Board, which oversees the PSNI, announced it had unanimously agreed to extend Mr Byrne's contract by three years. [...] In the summer of 2019, he became the PSNI's fifth chief constable. It was third time an English officer had landed the post.