I've just had the last hour at Clowbridge and can add:
Common Sandpiper, single,
Swallow, around 20 feeding low over the res,
Sand Martin, 1 feeding with the swallows,
Wheatear, 4, 3 of which were disturbed in pump house valley and flew high into tree and were still there when I left,
Grasshopper Warbler, 1 reeling at top end,
Willow Warbler, c20 singing birds.
