I got so carried away with my previous reply, that I forgot to ask my question, hopefully relevant to this thread. Can anyone recommend UK suppliers/ranges that are known for providing a good, useable selvedge? I'm keen to avoid "tuck under" and it would help me narrow down my long list of companies.

If helpful, I'm currently thinking of going for a heavyweight, pure wool, and probably a tweed rather than proper tartan.

[I've been reading @figheadair's paper on historical selvedges and it's quite fascinating how these have been treated. It's a shame we're losing some of these quality elements as mass production techniques take over in the interest of lower cost of manufacturing]