As per heading I need a camera to record my road rides after getting a black eye for holding a bloke up and the police not being interested So it needs to record both the front and back or will I need two separate cams?

Fly 6 is probably the easiest rear option. Light + looping recordings.

Go-Pro seem really good if you can handle the look of one strapped to the top of your bonce. Though they do a helmet front-mount now.

Sony and Contour are a little less silly looking when mounted offside on the side of your head.

Someone at work recently got a virb, but returned it for a gopro. I’ll try and find out why.

Cheers

Talk to dog cam sport.
They are very helpful and knowledgeable.
They also sell the police spec head cams