I was listening to some 1980s-90s Pentangle recently and was reminded once again of N P-S's gorgeous fretless tone and subtly melodic style.  Anyone know anything about Nigel and what bass he played back in the day?  
 
Perhaps our UK Alembicians might have some info.  
 
There's something very Wal-like about his tone, but that's just a gut feeling on my part.

I hadn't thought about Pentangle in a long time; listening to the first album now.  Thanks!

Try Wikipaedia..they usually have links at the bottom of the page