Just noticed that you’re going this Saturday. A couple of things I mean to mention if you are doing that route I sent you:
Be sure to take the Right turn at the roundabout after Cookham (SU 89096 85254) up a road named Terry’s Lane the route straight on is marginally shorter and doesn’t go quite as high but the Terry’s Lane detour is one of the best parts of the whole route.
Also beware of the hairpin corner coming down off Winter Hill (SU 86033 85481), it’s often gravelly and taken at speed is very easy to mess up in dramatic style. If your not familiar with it don’t give it full beans into the corner.
You can copy and paste the grid references into here for a better look at where I’m talking about.