The Large Thorn is a species that is nationally scarce and seems to be declining. It has been found at this site on a few occasions but not since 2005.
Convolvulus Hawk-moth by Andy Banthorpe
An impressive-looking member of the Parasitica here resting briefly for a clean:
A larva (sawfly perhaps?) making a very distinctive-looking shelter by sewing an oak leaf in half along its mid vein:
And plenty of galls, tentatively identified as caused by the following Hymenoptera:
Neurotenus quercusbaccarum (Common spangle gall):
Andricus quercuscalicis (Knopper gall):
Neuroterus albipes (Smooth spangle gall):
This one has me stumped. It doesn't seem quite right for Andricus lignicola (Cola-nut gall). Any suggestions please?