Hi JWF
I think that if you are convinced that your claim is justified and if the people you are dealing with are not sticking to a promise made to you, one could adopt a pragmatic approach.
You state that they are all promises and no action but have you sought legal advice. Have the organisation that you are talking about acknowledged your claim?
I am not a legal eagle so find someone that is and ask for advice. If you dont want or have the money for this go and talk to the Citizen's Advice Bureau.
One could fire a shot across the bow and state that if this matter is not resolved within say 2 weeks you will start legal action and that you will not only seek financial redress of initial claim but also any costs arising from the pursuit of your claim.
However do bear in mind that the aviation world is a pretty small one and bad news travels fast and reputations are easily damaged.
You are, it seems, disappointed that the moderaters removed the name of the establishment that you are currently embroilled with. However as bulletin board providers they have a duty of care towards those mentioned on it.
Furthermore you would not want to have to pay any of the hard earned cash as compensation for libel if the organisation was to take you on for such a claim.
FD