We are looking to move house some time before ds is 3 (now 18 months) and have narrowed it down to a couple of towns. If I want him to have a pre-school place from age 3ish do I need to book him in soon? Do we have to decide right now which town we're going to live in? And can you book a nursery place (or more than one?) if you don't live in the area yet?