nanny/childminder needed for Castle Cary area?

[amoralia]

Hi everyone,
We're making the big move from London down to Somerset (nearish Castle Cary) in July - DH's family are originally from Taunton.
First thing to sort out is childcare for my little (almost) toddling boy who's 18 months - we also have a 6 year old but he'll be going into yr 2, phew Ideally we'd need 1 day a week from September, and 3-4 mornings from March but I can be flexible. DH's family are just a bit too far to help out regularly.
I've tried childcare.co.uk with limited success - is there a different forum/better place to look or post? I've heard it can be quite hard to find...
Also would love to meet anyone with similar age children in the area - coffee/playdates/even, dare I say it...softplay!
Thanks in advance, Jx