b25 mitchells do fly imc

B25 Mitchells do fly imc
Bit of a help really, does anybody know where I can get a copy of this documentry from the early 1980’s?
My video copy went missing and I have tried unsuccesfully to track down a dvd ever since.
It was when a group of B25’s flew over to the U.K from America for the making of the film Hannover Street.
The documentry was much better than the film I seem to remember!
Hope someone out there can help me re-live a part of my youth.
Regards
Clive