legal to use a 2 way radio mike
legal to use a satnav and look at it trying to work out where your going whilst its stuck on the windscreen obscuring your vision,or buried in the centre consul causing you to look away from your normal forward view.
illegal to take a hand off the wheel to drink or eat a mars bar when your sitting in a full auto on cruise control with lane recognition etc,…beaurocratic cash cow…nothing more.