Very nice Feline, the only mistakes I could find are the spelling of Cygnet, and the identification of my motorbike as Charlotte's. She used to have a BMW K1100 LT, so mistaking my BMW K100RS for that is understandable.
Are you sure she wasn't also on a motorbike? Maybe my halucinations began earlier in the ride than I thought! 
I recall a hatchback, possibly a Renault Clio, with a blowing exhaust. She had a lot of camera kit, including a remote flash on a stand, which wouldn't go on a motorbike. I got to the bridge around 5pm. I'd made a decision not to film the section up to the bridge, apart from St Ives control. There's bound to a lot of Go Pro footage which conveys that better, and I'd been up since 4am, and filmed in the sun until the last riders had gone.
I'd mentioned the Bridge to Charlotte, she said she wasn't going that far.
I filmed some early riders, then got 90 minutes sleep at the Country Park Lodge in Hessle, just under the bridge. Then I went back and met Charlotte, I advised her to go beyond the main stanchions to get a less cluttered view, then I went to film riders crossing the bridge from the Humber shore, so we've got video of riders approaching Charlotte and the flash going off.
I then went back to offer Charlotte the other twin bed if she needed a rest before driving back to London. She declined and I went back to the lodge, and had a couple of pints while getting shots of the gathering apocalyptic clouds. Then to bed and up at 4 am. All this would have been fairly straightforward without my painful sciatica.
You must have passed at a time when I was limping from my motorbike to the bridge deck or back, as it's a few hundred metres.
