Chocolate and Vanilla pinwheel biscuits

Mary says these are "fun for bonfire night". As Adam had bought some fireworks for today, I thought I would quickly knock these up! I have been eyeing them up for a while, but thought I would wait for this time of year.
As you might imagine, it involved making two different types of dough, rolling them both out, putting one on top of each other, and then rolling into a sausage. It was then refridgerated, and  sliced into 20 pieces.
Mine didn't turn out quite as neatly as Mary's ones in the book, although I thought they still looked quite attractive. Unfortunately they did not taste as nice as they looked. We only gave them 6.5, so all in all, todays baking has been disappointing.
Still, the good news is that I only have 40 more bakes left!