Just seen this article listing 10 historic figures who lived in Croydon. I already knew about some of these (Conan Doyle’s plaque is round the corner from me, and Samuel Coleridge-Taylor has some buildings named after him and a photo up in Stanley Halls). I didn’t know all of them though.
10 remarkable people honoured with Blue Plaques around Croydon
ETA And there isn't one for William Stanley, the Victorian inventor, factory owner and philanthropist who founded Stanley Halls and the Stanley technical school which was attached to it, but which is now an academy.