Millions of cars are fitted with dashcams, and the footage they capture is increasingly being used as evidence in cases of dangerous driving, like when two cars collided in a horrific head-on smash in the Cotswold town of Lechlade. One of the cars span out of control and hit bystander Nadine Wood, causing her life-changing injuries. Thanks to dashcam footage retrieved from one of the vehicles, it's quickly established that one of the drivers had jumped a red light and had been driving dangerously.

We also see how police dogs are being issued with body armour, giving them the same protection as their handlers.

We see how thousands of repeat offenders – including burglars, robbers and thieves – are being fitted with electronic GPS tags, and in many cases their movements are being monitored 24/7. Probation officer Suzanne Bennett tells the programme that, in her experience, no-one wearing one of these tags has reoffended.

Also in this episode, West Midlands Police Sgt Tony Webb fears for his life when a man points what looks like a gun straight at him. But back-up quickly arrives, and body-worn video cameras capture the dramatic events, including the moment the man puts down his weapon and is detained. Footage like this can be vital evidence, and the latest bodycams can be set to be activated automatically, ensuring incidents like this are always recorded.