Here’s the part that makes every parent smile: once your child hits 12 years old, the height rule becomes irrelevant. Even if they’re still 134 cm (yes, it happens), they can legally ditch the booster. But don’t celebrate too fast—common sense says if they still look like a toddler in a trench coat, keep the booster. The law is the minimum, not the maximum.
I know a dad whose 13-year-old was 140 cm and insisted on using a booster “because it’s comfy.” That kid is either a genius or just lazy. Either way, the UK gives you the freedom to choose after 12 years old, but only if the belt fits properly. If your teen’s shoulders are still in line with the door handle, you might want to keep the boost.
