these two articles from "The Register" may give you jumping off points to start looking with
Ofgem, MoD attack pricey terror-friendly windmills ? The Register
Ofcom gets puffed out over wind turbines ? The Register
And around a year ago there was a much-hidden announcement that the RAF/MOD had withdrawn much of their objection to new wind farms following the purchase of a number (three???) of new mobile radar units. There was a thread in PPRUNE about it, but I've been unable to find it so far.
There seemed to be a bit of a hidden agenda going on at the time, as it appeared that the radar purchase had actually been funded by the government dept that looks after power generation by rerouting some of its wind power subsidies.....i.e the MOD were bribed to drop their objections by being given the radars
I'm sure some of the others here know more