Bicycle Tag of bike

I hope it's just that his phone has run out of juice or something. Edit: Posted a little too late.

Horn Steps

Marked as 'Horn Stairs' on the old map.

Here's some more--when you use the modern-day ferry, you famously have to walk through the hotel on the Rotherhithe side. There's been a ferry there for a long time, called the 'Limehouse Hole Ferry', and it seems from your map that (at least at low tide) it left from Cuckold's Point, which seems to be marked at the end of either a pier (are those the remnants of old pilings?) or just the hard standing that's still vestigial today.

Here's a nice blog entry about Cuckold's Point:

https://www.londonshoes.blog/2018/01/20/blackwall-point-cuckolds-point-the-thames-river-pirates/

https://en.wikipedia.org/wiki/Cuckold%27s_Point

Here's something about the general area, including much about the opposite side:

https://islandhistory.wordpress.com/2017/06/20/limehouse-hole/

https://hidden-london.com/gazetteer/pool-of-london/

There's also a link to our old tag of Wapping Old Stairs by Execution Dock in Wapping:

https://www.lfgss.com/comments/9617026/

Back in the day, pirates were not to be granted Christian burial rights – and therefore, their bodies were usually coated in tar and then transported back across the Thames to 2 specific locations south of the River – where they were then placed in to a ‘Gibbet’, which was basically an iron framed cage, and then put out on display at 2 strategic locations on the Thames, to act as a visual deterrent to any would be sailors entering the ‘pool of London’ who may have been having thoughts of ‘plundering’ and piracy.

The 2 locations where the gibbets containing the decaying bodies of pirates were displayed, were “Blackwall Point” and “Cuckold’s Point”.

(From the Londonshoes entry linked to above.)