I found this at an earlier stage of growth, a few weeks back, on Blackhill Quarry and thought it was Marsh Cudweed. I'm pretty sure it's Small Cudweed, which is a new one for me. Also, on the same patch of bare ground, some Trailing St John's Wort.
Here's some Common Cudweed that's growing a short distance away - photographed on 10/6.
The patch of 30-40 Common Spotted Orchids is coming along nicely on Blackhill.