This is from a pattern designed by our own Gabby Knitter on Ravelry (Rindy)
I absolutely adore this pattern - it is very versatile, can be made with or without a collar, short or long sleeve, plain or with a pattern.
Rindy very kindly allowed me to use it for charity. I am not sure if she is still making it available but there’s no harm in asking!
I used about 100 grams of DK.