So that little clockwise ring-o-ring-o-roses round Vauxhall was a Special Ops thing was it? Looked to me like No 5 atishooed a tad too long and had to play catchup to Tower Bridge! I had thought the orbit might have been a request to stand aside for the LCY traffic on RWY10...
Found myself in the company of some blokes in camouflages for a pint an hour afterwards a bit further downstream...