@soundclamp @Giselle @fenhuw I only do one or two public walks a year now when I'm visiting from my home in Spain, but they are available online here: https://ghostsigns.co.uk/tours.
I don't really know about cinema, but London has many active local historical societies, often with associated events programmes.
Where are used to live, but not part of the Hackney Society, are the brilliant Stoke Newington History Talks: https://stokenewingtonhistory.com/stoke-newington-history-talks/