There’s an event in Brixton https://www.eventbrite.co.uk/e/afl-grand-final-live-in-london-tickets-167999050683?aff=ebdssbdestsearch
and another near Tower Hill https://www.eventbrite.co.uk/e/afl-grand-final-2021-live-in-london-tickets-168084777093?aff=ebdssbeac#map-target
I’ll be at the one near Tower Hill