The CAA have been working on this problem for quite some time, so it shouldn't be a surprise to government. The following document is dated July 06:
CAA Policy and Guidelines on Wind Turbines
Chapter 2 spells out the impact of wind turbines on aviation and given the fact that civilian aviation is now more widespread than military aviation (even low level radar coverage over the sea for oil rig operations is important), it's strange that just military objections are being noted.