Planning minister Nick Boles’ leaked letter to Hayes about the risks of “riding roughshod” over the concerns of anti-wind campaigners served as another reminder to the Lib Dems that the Conservative foot-soldiers in the UK's Coalition government are going to keep making trouble over wind farms.

It should also have rattled nerves north of the border, in Alex Salmond’s camp. Scotland's First Minister does not usually miss an opportunity to censure Westminster in the name of Scottish interests, but he was notably upbeat when the Electricity Market Reform (EMR) White Paper was published in November.

This