Well the way it stands at the moment, you could get the CAA to issue the ARC yearly for the peanuts it currently costs, and a licenced engineer could sign off the aircraft on his licence, which is allowed for under the new system and ermm you would not need an approved organisation at all, as the CAA would be the people responsible for the issue of the ARC.... Now if everyone went that route the whole sorry system would collapse.........
Though they have realised this and I believe are trying to rectify it