One the dough has been refrigerated for an hour, it can be prepared into biscuits. Take the cling film off the dough and roll the entire dough in sugar. Using a sharp knife, slice the dough into 3mm thickness discs and place on a greaseproof paper. Make sure to place them with some space in between for the biscuits to expand.
Place in a pre-heated oven at 160 degrees for 18 minutes. Once baked, remove from the tray and place on a cooling rack to retain the crunch.