The stairs located at the south west corner of London Bridge on Montague Close.
https://www.londonremembers.com/memorials/nancy-s-steps-plaque-2
https://londonist.com/london/history/where-are-nancy-s-steps-and-why-do-they-lie-to-us
From the blue plaque: "These steps and arch are surviving fragments of the 1831 London Bridge designed by John Rennie and built by his son Sir John Rennie. These steps were the scene of the murder of Nancy in Charles Dicken's novel Oliver Twist."
It is not clear who placed this plaque and the part about Oliver Twist is not accurate. See links above.
867 photos taken in February 2022 with a Sony a7R III and processed in Reality Capture.