Pete, I would also say that you have a substantial case for legal action against BA for defamation of character / slander due to the actions of the SEP training staff.
If what Captain Burkill says is the truth and the WHOLE truth about why he took voluntary redundancy then I guess he'd have a substantial case for legal action against BA for defamation of character / slander or constructive dismissal, but before you get into a legal action you got to make sure there ain't a skeleton you'd prefer to keep in the closet.
There can be times when a company and an employee part company amicably with both sides agreeing to say nothing about the true reason.
Aviation's a very small world.
Just for example - to avoid publicizing in the UK an incident that happened down route, or to avoid embarassing/hurting an innocent third party or third parties, or even a mixture of both reasons.
Maybe BA have been a whole lot more generous to the captain than some folks have been led to believe.
As I say, aviation's a very small world.