Well, the Apache's which aren't flying are obviously not flying for a reason. The computer equipment in them was not "up to scratch" for our Armed Forces and are not going to be flown untill it is upgraded.
But at the same time the MoD have a lot of money being spent on other projects for the Armed Forces, so are having to budget the costs into another year's expenditure. The need for the UK to have these attack helicopters is not immediate..thats what we are using America for in Iraq.
(Just what I heard)
Graham