I believe it was a great tragedy for JB Taff dying, all the original case notes were able to be hidden away etc. Also all his reasons for believing in four murders / suicide were never heard.
If Taff did change his mind it was because if you are told a silencer with Sheila's blood in it has been found it is virtually the only conclusion you can come to if you believe the exhibit is genuine.
There may have pressure and he would ultimately just tow the line in his views.
He was no longer running the investigation. Ainsley said he got him to conduct the first interviews because of him being involved since day one.
The police are " we stick together ," body.
He's not going to risk his pension and career over a 24 year old farmer. That's the bottom line.
As I said though we have no idea if he genuinely had a change of mind, had pressure put on him or anything. He died in 1986.
Me personally I won't take his colleague saying " he believed Bamber gulity in the end for gospel " I always like to hear from the horses head. Other people will have their own views.
Doubt he would have been a defence witness to be honest.