As one those people who’ve been posing questions to City Hall on this issue in recent days, I can tell you that Khan wasn’t the only person in the building who was under-briefed.
Currently each of the 32 boroughs has a dedicated commander who is responsible managing the deployment of officers in a way which reduces crime and addresses concerns raised by local communities.
The freeze was a major part of Mr Khan’s election manifesto and was popular with many Londoners who’d seen the cost of travel rise each year under his predecessor, Boris Johnson.
The guards cover a detainee’s face and make it impossible for them to bite or spit on officers, thereby substantially reducing the risk of infection with hepatitis, TB and other diseases.
Elections to Scottish and Welsh devolved bodies have already been moved to avoid a clash and in May this site revealed the Cabinet Office had considered moving the London contest.