ds1 is in an adult seatbelt. i don't like it, but feel like its the best option we have at the moment.
Yes DS is in an adult seatbelt too. He is 110cm and 21kg at 4 years and I would much prefer had a five point harness. Funnily enough he can still fit in a compaq with 5 point quite comfortable (Seat at mums) but the instructions say not for use about 14 or 18 kg.