The law needs to be changed then. The number of accidents seems to be increasing. Especially on motorways like the M60, which regularly gets closed. I am convinced this is due to people looking at their mobiles (I actually saw a guy in the middle lane with an iPad resting on his steering wheel playing a driving game - I almost cant believe it myself).
I had a spell catching a bus at rush hour a few years back, I counted (on average) between 5 and 6 out of 10 drivers were holding and using their phones (on a busy A road).