From what I know, the UK Apaches are not being used because of a shortage of crews. There's been a spat between CAA and the military over training. As I was told, any UK pilot who trained on the US facility isn't licensed/certified by the CAA for UK ops - and the UK pilots have to use the US training facility because we have nothing big enough in the UK. We apparently don't have a training area large/safe enough for the full range of the laser.
Can't tell you how I heard this and it may be a load of cod's "wallop".