I have only just got around to watching the BBC programmes on child protection social work in Bristol. I thought they were very good, giving an accurate impression of what life is like on the front line and the issues that people trying to protect children face.
I recommend, if you haven't seen them already, that you watch them on BBC iPlayer, which, as I understand it, is only available to viewers in the UK. In any case the accompanying BBC article gives a good flavour of the series.