I have finally found it! The Holy Grail of knitting yarn - a pure wool, machine washable DK, with a wide range of gorgeous colours and an incredibly good price tag!
Hjertegarn (Heartyarn) is a Danish company and their Vital DK is a deliciously soft wool that is going to be so versatile - I am thrilled with it!!
50g - 115mm
Machine washable at 30 degrees
Recommended 3.5-4mm hook or needles