Reading about your Jag encounter reminds me of an amusing event a couple of Sundays ago.
Mrs. Wow and I were riding the tandem across
this bridge. 30 years ago, it was the A130 but has twice been upgraded. It is the lowest bridging point of the River Crouch and is now single carriageway, with priority for north-bound traffic.
We were heading north so had priority. At the front of the southbound queue was a smartly-dressed middle-aged man and a female front-seat passenger in a fairly new Jag. We had reached about half-way across the bridge and something, I believe a gene which tells him that under no circumstances is he to behave courteously to a cyclist, persuaded him that it would be a good idea to drive onto the bridge.
We maintained primary until he, and we, were forced to stop, almost eyeball-to-eyeball. What made it more amusing was that a couple of cars had followed him onto the bridge and a queue of traffic had followed us onto the bridge.
There was enough room, just, for us to manoeuvre around him and go on our way. His window was down, and I couldn't resist the temptation to say to him "You were supposed to give way there, mate!" I rather regret now not videoing the untangling process.