https://www.toolstation.com/2kw-upright-fan-heater/p62624
Something like this will do, a fan heater will heat the room quickly. It also had two settings, 1kW and 2kW and a thermostat.
Daughters motability car Hyundai Tucson Ultimate self charging hybrid Serenity White Moss Grey interior.
My car SEAT Ibiza SE Tec 1.2 petrol TSI 2017.