I am finally getting somewhere with this aspect of the expedition. To a certain extent it has actually been easier to progress this than other aspects:
The Ordnance Survey have very kindly agreed to provide me with a brass survey marker to place on Rockall, and to process any GPS measurements I might take. All I have to do now is drill a 60mm deep hole in the granite to fix it!
The Natural History Museum in London has expressed serious interest in helping me to collect, preserve and identify any insect material I might be able to obtain, and I will hopefully be meeting with them later in the year.
Geoff Hancock (no relation), Curator of Entomology at the Huntarian Museum in Glasgow, who himself has undertaken studies of invertebrates on St Kilda, has also agreed to provide me with equipment and guidance for collecting any invertebrates on Rockall, to identify them and preserve them for future study.