For these sets I have substituted the original Bluefaced Leicester yarn with Shetland Heavy 4ply/Sport and DK. You can read more about them here and here. While Shetland fibre is quite different from Bluefaced Leiceter my Shetland yarn is worsted spun and of a very fine quality which means it will knit fairly similarly to my original Bluefaced Leicester yarn (which was also worsted spun and quite plump for BFL).
The Shetland Heavy 4ply/Sport sets are a similar weight to the BFL used in designing Fyrish and will knit as a similar shawl in look and feel. The Shetland DK is significantly more plump and heavy and will knit as a more cosy shawl with a little less definition than the original – different but still stunning!