WYS - Bluefaced Leicester - New Colours - DK (50g) - British Wool WY BFL is 100% Bitish Wool £4.99 Colour: [Choose]BluebellSageLavenderAubergineBlueberryWild RoseAvocadoCatkin Quantity: at £4.99 each Add To Basket 70 in stock. WYS - West Yorkshire Spinners produces these BFL DK wool yarn in pastel and intense colours. Wool from British sheep breeds grown in British farms and yarn spun in Yorkshire mills: 100% British wool. There is a WYSpinners Pattern Book with 14 designs by Jenny Watson using BFL DK natural yarn. These patterns can be used with these dyed yarns.