As anyone who has watched Sky's Street Wars or ITV's Cops With Cameras will testify, filming the world as seen through the eyes of our police officers makes for great TV.

So you can be sure that fitting headcams to members of the West Mercia force in Worcester will result in some fantastic footage.

However, this time it won't be a television audience watching it, but magistrates or a jury.

Perhaps it's because miniaturisation has only now made it practical, but putting cameras on police officers' helmets so they can present visual evidence of crimes in court is such an obvious, brilliant idea, it makes you wonder why it hasn't been standard practice for years.

Why waste hours of police time filling in forms and collecting statements when the irrefutable evidence of law-breaking is there before your eyes? And think of all the court time that will be saved when criminals realise there's no way they can claim they didn't do it.

The cameras will perhaps be most useful dealing with the kind of petty anti-social behaviour that anyone wandering around our city witnesses on a daily basis - although for the system to work, the police would have to be out on the streets, not riding around in cars or swamped with paperwork back at the station.

At the moment, the headcams are only a pilot scheme. But with Devon and Cornwall police reporting steep falls in crime as a result of their own trials, it's hard to see why they shouldn't be adopted permanently.

And if West Mercia also sold the footage to the media so the world could see what idiots certain people had been, everyone would be happy.