Night time filming at Millennium Mills on Sunday

Tomorrow (Sun 20th Jan), there will be filming of something or other at the derelict Millennium Mills in Docklands.
The Millennium Mills is a bit of a favourite for film-makers thanks to its still derelict state, and the large empty post-industrial landscape around it.
Not sure what, but whatever the filming is, it’s going to be big enough for there to be an air traffic warning of “downward facing bright lights on film set east of Millennium Mills” being used to illuminate the