We've just arrived back in the UK for an extended period and have bought a car and borrowed maxicosi car seat from a friend for now. The car seat is just secured with a seatbelt, but it does feel very secure - the seatbelt is held in place much more securely than it is on our Aussie car seat. I was skeptical, but after looking at it and giving it a good shake and pull around I feel confident that it is safe. I'm not sure that's the case every time - I vaguely recall Yules having a problem with car seats when she arrived in Jersey.