In this particular instance that doesn't seem to be the case. First off, the article states it is film that was recovered from bins/skips. Until at least the 90s it was extremely common for TV programs to be recorded to film and then processed onto tape for airing (hence why we were able to get star trek TNG and The West Wing in HD). The implication is that it's the film that was discarded (which couldn't have been reused).
The other implication, is that if it is the original film reels it will potentially be unedited footage.