I want to know how did you find out the least used stations for all London Boroughs, it must of been very tricky! Did you have to look at each station in each borough? I also was thinking of doing a series where I go to each least used station in all the London Boroughs and use your video for knowledge and statistics if you wouldn't mind, I would credit you and tag your channel in the videos!
I'm actually quite certain that the stats for Bexley are incorrect. I live in Slade Green and though the station does become slightly ghostly around the 1 and ½ hours before and after 11.30 - 14.00 , Slade Green sees a lot of traffic and about half of that is changeover passengers which don't get counted when carrying out the survey as the counting is carried out at the two entrances. Slade Green connects to 4 lines in total not including the Thameslink Service. People often go back in themselves and then change for a differing line when travelling to stations preceeding Zone 2. There are also a considerable amount of Thameslink Passengers changing for direct services via the other LSER lines or for stops that are skipped by the GTR service. If I was to make a guess the least used stations would be a close tie between Erith and Belvedere.