Vote me with Hot John. It is a bathroom and you need a dedicated 20 but that can handle all the outlets in the bathroom (fan, light etc). Where this gets dodgy is if the fan/light has a 1kw toaster wire heater in it. That is still legal but you won't be drying your hair with the heater on. If it is a 1.4kw it needs to be on a dedicated circuit but that is another issue.
