Hi Dave, I was up there from 08:00hrs so can add the following
2 Buzzard drifting S. 10:50 hrs
4 Kestrel in quarry - 3 singles seen earlier around res so could be same birds
1 Sparrowhawk
Chiffchaff calling from car park
Large mixed species flock along the side of the old plantation included Blue, Coal, Great Tit, Willow Warbler, Chiffchaff, Goldcrest, Spotted Flycatcher, Chaffinch, Reed Bunting, Redpoll, Wren - 30+ birds