I used bakers yeast for my 1st batch, because I didnt have any real yeast. It still came out pretty decent. Only really clear differences I noticed between bread yeast and nottingham was, the bread yeast fermented a lot faster with more bubbles. Also the bread yeast took a lot longer to clear out, and even when cleared had a slight, but distinctive yeasty taste. I dont think I'll be going back to bread yeast any time soon though.