The cost just isn't a valid excuse any more. If he wanted to, he could reissue a lot of this stuff very cheaply. It's probably true that the majority of the stuff has little commercial value, but there are recordings which are very much in demand, and not just the Nic Jones stuff. CD duplication is not expensive, and it would cost very little to remaster the most commercial recordings and issue them. Not that this would help the artists, but it would at least get the music back into circulation.

As for the less commercial recordings, they could simply be offered as downloads without going to the expense of manufacturing CDs. I'm sure many people would rather have the music, even at lower recording quality, than not at all.

If Bulmer isn't interested in doing it, I'm sure there are labels which would. However all this supposes that the tapes are still in usable condition, which people who know more about these things than I do seem to think is unlikely.