Channel 4 on the move?

With all the talk of The Great British Bake Off moving to Channel 4 another move involving the station has some what been ignored. That is the station itself is moving it's headquarters from London to Birmingham. This is not quite in the same league as the BBC's  moving a large number of departments to Salford as no programme has been made at C4 headquarters since the demise of Right to Reply in 2001. So what is behind the move? Some would suggest this is the price for the station has to pay avoid privatisation as suggested by former culture sectary John Whittingdale in view on the station's ever increasing commercial outlook. One final point, will will see the same stories in the press bemoaning the money spent on moving people as what happened with the BBC's Salford move?