Hi, I live between Claygate and Thames Ditton and its a fantastic place to be with little ones as there is so much to do. I have two girls, one who will be 3 in August and the other has just turned 3 months.
Last year, together with my cousin, I started
http://www.thamesnippers.co.uk for families with under 5's who live in Thames Ditton and the surrounding areas. It's a not for profit site which we run in our spare(?) time. It's got lots of info about local playgroups, pre school classes, soft plays, playgrounds etc. we are also on twitter and Facebook.
Feel free to contact me if you want any further info or want someone to meet up with when you move in August!