Driving while using a mobile phone

I felt lucky to get to work alive today. I was stuck behind a Polish car (i.e. left-hand drive) and the driver was using a mobile phone in one hand. He was swerving all over the road. I stayed well back. Unfortunately, I didn't have a hands-free kit of my own else I'd have reported him to the police. I have today ordered such a kit. It's being fitted next Thursday.