Thanks again, hive mind - but yes, it's new old stock and the contents of all the cassettes is available as CDs or even MP3s for the most part. Back in the day you could order, say, 1000 CDs and 500 cassettes as a job lot and expect to sell them ...these days the CDs sell at gigs but the cassettes don't. And haven't for some time. We have been hopefully taking the boxes with us when we moved house each time but nothing has changed. I don't want to get into listing them anywhere and waiting for the sales to come in one by one, when it's more boxes to pack next week and unpack in due course, just to gather dust.
Equally I'd much rather not put them into landfill, and I appreciate Nigel's careful dismantling of the cassettes but in all honesty we have so many other things to do right now it's pretty much the last thing I'd like to spend time doing!
As to dementia sufferers etc - again, I'd need to find a suitable residential home and see what they think, but it seems like a long shot to me and my guess would be it would be simply another stockroom for a box to grow dusty in.
There was a place in Bristol that would do the recycling thing, it seems, but no longer.
I'm sorry but I think it's going to have to be landfill. In the meantime if you'd like a CD of any of my album titles, all except the first one ("Spreading Rings") are available as CDs and I think I have two mint vinyl copies of "Burnt Feathers" left. Back to the packing ...