Of course, as they are invovled in the saving of lives they exist in a grey area where the authorities would be obliged to take over if they didn't exist, but not necessarily with the same level of expertise. This would be expensive, so it is in the government's interest to sort this out.
Unfortunately it's a case of left hand/right hand and, as is usual in the UK, we end up with the worst of all possible worlds. A compromise will be agreed, but only as we get to the point of the organisations threatening to disband. keep to the Fen Causeway