I've finally gone back to work with ds at 15mnths. The nature of my work is that (happliy) I'll only do the odd day here or there, and never have much notice beforehand as to when I'm needed. I live in Central London (W2) and have 2 willing but busy grannies nearby. I can forsee all sorts of problems when they can't help out, and feel bad asking them at the last minute. Any ideas on childcare? do they do drop in nurseries? (what about the childrens sleep times at nursery?) a childminder? an on / off nanny? how does it all work - I'm absolutely clueless. How much does it all cost?