Here's another inspiring story for you then! 
As I said I am dubious about job ads (unless you really want to work for the civil service) but I should probably share the below links for anyone looking for part time and flexible opportunities:
www.timewisejobs.co.uk/?gclid=CLiniPrN-sQCFQjKtAodBUkAow (all sorts of part time roles)
jobs.capabilityjane.com/ (part time professional roles)
www.hurstoneliot.com/ (part time/project roles, professional type stuff)
www.cmocentre.com/Welcome.html (part time B2B marketing roles)
They are all worth a look, but please, please do not let up on your networking efforts in parallel. Why?
I briefed Timewise (in my pre-maternity job), to recruit a part time HR person for us, but ended up hiring via personal contact instead. The person we eventually hired had had three years out as a SAHM and wanted to get back to work, but her confidence was really low. However, she sorted out her CV and sent it out to absolutely everyone she knew, explaining what she was looking for (part time HR work, preferably in a small informal company). Meanwhile, I had emailed the former HR director of a company I used to work for, asking him if he knew of anyone. A few days later he came back to me, saying that someone he used to work with had a CV of someone she knew... and voila!
Once we had established she was competent and would be a good cultural fit, we had a pretty open conversation about what we as a company needed in terms of availability and workload, and what she needed in terms of flexibility and pay. I think she ended up doing three days a week, with two early finishes because of childminder pick ups.
At one point, she said she felt like she was doing more work than she was paid for, because she was spending a lot of her non working days dealing with urgent emails during a particularly busy period. So we increased her pay by half a day, to cover the time she spent working from home.
From her perspective this was pretty much the ideal job - part time HR work in a small informal company, a good foot back in the door after three years out (she's now working at a bigger company in the same industry) - and from ours we were happy because we had someone super motivated and hard working, plus it saved a fortune on agency fees - all it cost us was a bottle of nice wine to the guy I used to work with!