The Twelve Apostles of Ilkley Moor 2
Image by Kozmik_Ken

< the weather didn't help either as it was chucking down and visibilty wasn't great - still the moor was really atmospheric >

Sometimes I find that can be the best time to visit them!

< I believe there are 4 circles on the moor - is this true? >

Aye. Sadly the one at Bradup was recently destroyed:
http://www.themodernantiquarian.com/site/2194

But we've still got remains of the Roms Law or Grubstones circle:
http://www.themodernantiquarian.com/site/2720

The messed-up site of Backstones, which it seems only the eastern edge is part of the original (and not far from Cow&Calf):
http://www.themodernantiquarian.com/site/2733

And the very curious Horncliffe circle:
http://www.themodernantiquarian.com/site/2721

But for position and views, Apostles seems the best.

Cheers

I think the Backstones one is possibly one that I came across.

Your right about the rain etc, most circles I've seen have always been in the mist, rain, snow etc, you can get some really good shots - plus it puts the tourists off!