DF field meeting in 2011 - record enquiry

This is a bit of a long shot, but does anyone remember recording the stiletto fly Thereva cinifera during the DF field week in Cornwall in 2011? There is a record from that field week shown on the NBN Atlas, but with no recorder name, and Darwyn Sumner and I have been unable to find any further details. This would be the only record of this species in south-west England so it needs confirming. Please let me know if it is your record!