A delightful gathering of the London ends (plus Peter Zollinger from Zurich) of the SustainAbility and Volans tribes at The Waterhouse Restaurant today, though with one of my dishes turning out to be disconcertingly full of human hair. The restaurant provided some sort of alcoholic compensation, which four of us then plunged into with multi-coloured straws. Later, as we were leaving, a snowball fight broke out in the courtyard and then spilled into the street, eventually involving local boys. I may have started it. Great fun, perfect snowball snow.