Those 1980s clips were put together by Damon Peacock from official PBP videos. Damon also made a good 2003 PBP DVD and an excellent 2005 LEL DVD, with rider interviews done while he was riding alongside. He still managed to finish both events, despite combining the hassles of film-making with the usual dramas of riding long brevets. His articles in Arrivee are worthwhile reading too.
I would guess that the trailer is for this:
The DVD will be available for £15 + p&p through the website HYPERLINK
"http://www.pbp-films.com"www.pbp-films.com which is currently under
construction and should be up & running in the next week or so. There
will also be ads in the cycling press.
We are just putting the finishing touches to the film and it will be on
sale in May.
Thank you for your interest,
(cut from the AUK e-list)