Anita Bush, you made an interesting point when you wrote "I hope that the RAF crew can see this as a form of closure for this sad accident. I know that they have had this hanging over them for some time now."
Quite what have they had 'hanging over them'? The AAIB report made it quite clear that the Sea King downwash had been no factor during the Cessna's approach and landing; it was when the Cessna pilot later attempted a high speed runway manoeuvre not in accordance with normal aviation practice that he clearly lost control.
So how could the Sea King crew have considered themselves to have been in any way to blame? The AAIB report states that there was a vague possibility of the out of control aircraft taking off and stalling, recovery from which might perhaps have been made more difficult due to the 'light breeze' effect of the Sea Kings rotor downwash, but certainly not as a direct result of encountering rotor vortex effects. In any case, that was mere unproven speculation.
Out of interest, what did the RAF's own BoI say? Because if that had attributed any blame to the Sea King crew, then clearly that would have undermined any reasonable defence the MoD could have put forward to refute the claim and an out of court settlement was probably the only option.
RIP