Otley Chevin race has also dropped from an A to a B, bit irritating (although it looks like the measurements of the Chevin may have been out a bit which would have classed it as a B anyway)
Chevin, as far as i can work out, is 3.9k/202m which makes it a cat A. There are other stipulations for a cat A, including the requirement for genuine fell terrain, which the Chevin doesn't meet. For me it's a trail race, albeit a steep one.