Kimberly-Clark’s global potty training study suggests the average age in the UK is 2.5 years but also acknowledges that every child is different. Childcare professional Julia Perry agrees it’s worth starting to think about it around that time. “In my experience (and I’ve potty trained lots of children throughout my career), if the potty training process is introduced at the right time, it can be achieved within a week. However, every child is different and for some children the idea alone may take a week or two to grasp, sometimes more.”