Just as an aside in connection with the house at 78 Thicket Road, Anerley. There is mention of the address for the Tanner family. Their 3 sons attended Dulwich College. Details here for one of the sons, Thomas Lanfear Tanner https://dulwichcollege1914-18.co.uk/fallen/tanner-tl/
Chris, do you think the reference to 78 Thicket Road is correct? You mention there has been renumbering a few times on the road
78 is correct. That side of the road, at least, was only renumbered the once. The next directory I have after 1892 is 1896, showing William Burbridge Tanner, solicitor & commissioner for oaths. I think he's the one whose death was registered in Croydon in December qtr 1929 as directories 1931-35 say Mrs Tanner. All 3 sons are named on the Penge War Memorial.
At the risk of starting another "aside", an interesting find in the 1939 directory is a Shalom Home for Jewish Children next door at No 76, with 7 redacted entries in the 1939 Register, presumably the children. I havem't investigated further, but Kindertransport springs to mind.
Local directories did not resume after WW2 and the electoral rolls thereafter show these large houses in multiple occupation.