Great Poster Paul,
Taking the film from a Cinema,was the only way the pirates would have got the full movie.
To beat the pirates,the studios would send them out missing 1 reel,the last reel would normally be delivered the evening before it opened,always under a false movie title,a security measure he still used for Phantom menace + sequels.
I admit I first saw Jedi on VHS,and yes it was missing the reel containing the speeder bike part...
England must have had better pirates than the Scottish ones.
Stew