That simply isn’t true. Permission from who?
The officer in the patrol car has to radio and ask for permission from the control room supervisor. The supervisor will ask for speeds, weather conditions, traffic conditions even the age of the driver before he will agree to allow the pursuit or not. In the same way the supervisor will halt the pursuit if he deems it unsafe. I do wish BM posters would not make such sweeping statements as 'thats simply not true without knowing any facts of how the police operate. One of the reasons this has been made into a major news story by the Met is that is is a complete about turn and why an Inspector stated that criminals had been removing their crash helmets whilst being chased knowing that the police would stop chasing them. The inspector stated that was no longer the case.