It is growing like topsy – this Dads and Doughnuts (although the Americans spell it donuts) idea. Yesterday Alan Johnson followed my lead, and today the Prime Minister is following my tack! Just glad I put it out there live on the Politics Show last Saturday week and at the Lib Dem conference last Thursday.

And the point of it all is that, in contrast to Cameron’s populist but puerile attempt to glue people together with tax breaks, we need to be getting real support to single and separated parents. Helping mothers and engaging fathers is really vital. You can’t do it through legislation, but how schools involve both parents is a very interesting line to go down – and I am going down it.