Following on from the M&S Bella Freud thread. There's a collaboration between the above mentioned, who i must admit I've never heard of, and monsoon .
There's quite a few festive jumpers at around £75 for acrylic/polyester mix.
This is the sort of thing although there's some really pretty fair isles.
https://www.monsoon.co.uk/monsoon-x-sarah-corbett-winder-duck-fair-isle-jumper-brown-10013550063.html