It is in the news that new speed cameras are able to use "AI" to see inside cars and:
clampdown on motorists “distracted” by their phones even if they have them on their lap while at the wheel
The law concerning mobile phone use in cars was strengthened in 2003 and 2022 and it currently says:
110.—(1) No person shall drive a motor vehicle on a road if he is using—
(a)a hand-held mobile telephone; or (b)a hand-held device of a kind specified in paragraph (4).
(4) A device referred to in paragraphs (1)(b), (2)(b) and (3)(b) is a device, other than a two-way radio, which performs an interactive communication function by transmitting and receiving data.
(6) For the purposes of this regulation—
(a)a mobile telephone or other device is to be treated as hand-held if it is, or must be, held at some point during the course of making or receiving a call or performing any other interactive communication function;
From an naive reading of this it seems required to demonstrate that the device "is, or must be, held at some point during the course of making or receiving a call or performing any other interactive communication function", which would seem to be hard to prove from a photograph of a phone in a lap.
The government advice specifies that using devices hands-free does not breach this law, "as long as you do not hold them at any time during usage" and specifies using voice command as hands-free access.
Would "I never held it in my hand while driving" be a defence against a charge under this law, when presented by a photo of a phone in ones lap? If not, would it be a defence if the phone was in a storage area of the car, either within or out of reach of the driver while driving? Would using your finger, voice command or no commands make a difference?