That was a bit below the belt given that Whirls and a number of other folks have given you an abundance of free tax advice and in return have been furnished with vague and incomplete facts concerning your arrangement.
You bang on about some deal that AOPA have done but in order for that opinion to be relevant to your circumstances then you need to contact them directly and avail yourself of the minute detail. As I am sure you are aware the binding opinions given by HMRC are given on the basis of the facts provided to them and their interpretation of the relevant tax acts to those sets of circumstances. The fact of the matter is that if you want some water tight advice then you need to lay your cards on the table and write to the IR seeking a binding opinion. If I was in your position I would engage a decent tax practitioner with experience in the aviation sector rather than doing it yourself.