New legislation has come out on October 1st 2015 regarding smoking in enclosed vehicles. The legislation states (www.gov.uk): -
It is illegal to smoke in a car (or other vehicle) with anyone under 18. The law changed on 1 October 2015, to protect children and young people from the dangers of second hand smoke.
Both the driver and the smoker could be fined £50. The law applies to every driver in England and Wales, including those aged 17 and those with a provisional driving licence.
The law applies: