Sam, I would be getting that seen to. It does look like the adult tooth is quite large though for the space that will be left by the baby tooth. Sometimes it's just a case of the teeth not being aligned in the gum and it could be fixed by removing the baby tooth, but I don't know what a dentist would do to make the adult tooth move forward - in an adult you would use a plate, but for a kid this age I'm not sure. It may not be a problem in the long term though and this could just be a once off kwim? It's something I've thought about as DH and his brother and sister all had shocking teeth as kids and had braces.