It’s collections like this that sometimes turn out to have the only surviving copy of the Apollo moon landing broadcast. I would digitize the report of what is in there and make it available on the Internet as fast as possible, so that people who are interested in this stuff can see if there’s anything that is not available elsewhere
Yeah, this is my likely approach - it’s not impossible he’s got some BBC stuff that’s otherwise lost, as he pretty much ran two VCRs continuously for a quarter of a century, from the early 80’s to early 10’s - but it’s mostly just hoarding.
If and when it’s a relevant problem for me I’ll go through his catalogue, digitise anything worthwhile, and then dispose of the lot, be it through sale as recordable media (they should all be in great shape, as he stores them well) or otherwise.
