Question to the Department for Transport:

To ask His Majesty's Government what is their assessment of the danger, if any, caused by cycling on roads with one hand on the handlebars while using a mobile phone with the other.

Nobody should hold a mobile phone while cycling as this could affect their concentration and situational awareness. While no assessment of the dangers caused by this has been made, and it is not an offence to cycle and use a mobile phone, cyclists could be prosecuted by the police for careless or dangerous cycling.