Each pamphlet has a different set of recommended yarns. The following are from the Peter Gregory and Loweth version.

Materials
Peregrine Courtelle DK 100g balls
Colour A 1 1 1 ball
Colour B 1 2 2 balls
Pure New Wool DK 50g balls
Colour A 1 1 1 ball
Colour B 3 3 4 balls
LOWETH Special DK 100g balls
Colour A 1 1 1 ball
Colour B 1 2 2 balls
LOWETH Olympus Knit & Crochet DK 100g balls
Colour A 1 1 1 ball
Colour B 1 2 2 balls.