The Giggly Pig at Walthamstow Farmer's Market.
They are a little on the large side for me, and they are not wrapped in caul so can sometimes fall apart a bit. I used 4 and reformed them into 6, (I think the smaller ones cook better, and so have a nicer texture) and wrapped them in streaky bacon before baking in the oven for half an hour. I added some gravy for the last 10 minutes. Mashed potatoes and greens of course.