That was, in part, because of the "huge financial penalties for newspapers which choose to be outside the system and an arbitration service which would open the floodgates to compensation claimants", president Adrian Jeakings said.
Last week, the two sides were in court arguing over whether the probate proceeding should be held in open court, or in a private arbitration proceeding.
But other dispute-settling bodies, even in countries known for open governance, are more guarded: for example, the Arbitration Institute of the Stockholm Chamber of Commerce, to which many energy disputes are referred.