When I took this picture the driver had his hazard lights on because he was broken down in a dangerous place and was on the phone trying to arrange for some breakdown firm to come and give him assistance.
Or he had his hazard lights on and was just making a phone call. In a dangerous place.
My guess is the latter as two mins later he went past me at the next bus stop. Not what the department of Transport really ment when they brought in the law making drivers pull over before answering the phone.