@LauraBatham Yeah, and you're right, that it probably would be. But it's still always worth us as fans having a look in these places, not necessarily with the goal of finding something ourselves, but bumping into the right person who perhaps doesn't know the rarity of what they have.
To be honest I query how effective the publicity-loving fedorad Philip Morris' approach is. He always acts like he's liberated missing episodes from the clutches of evil, when my instinct personally is that it's more likely that collectors just don't always know what's rare and what isn't. There's presumably no reason they can't keep the film cans after the BFI (or the BBC) has a copy back. I'm digressing big time—but agree with you that there's certainly more out there and there's never any harm in looking.
