GeoGraph - photograph every grid square

I was lucky enough to catch 'swinging Sutton!' in preparation for the rather large cargo boat on previous image Link . One would expect an awful lot of clunking in this process... None of it! The operation is almost silent, save for the sirens, and takes around a minute. At time of taking this picture, the barriers preventing traffic from crossing the bridge were out of action due to being crashed through by a stolen lorry, so the road was closed by two white vans with orange flashing lights!