It is the Checkerboard Lace Scarf from here
The yarn and needles were bought here. What a lovely shop.
I think these are the best needles I have ever worked with. I don't think I can knit with anything else now.
The yarn is Mirosol Pina (80% Baby Alpaca, 20% Bamboo) in the colour 16 (that's a boring name).
I'm squeezing in some knitting between the next assignment (Empirical Stage of Research) and the marking work I am doing!