It is a flat roof, to which the residents have no access, and is four stories up
Ah, that does complicate things a tad. That's probably higher than most people will attempt with ladders.
So apart from the consent issue; access tower, MEWP or scaffold.
Time to get shitty with the freeholder / management co.
He's way ahead of you there!
Speaking of which, what came of the whole garage lighting issue?
@ChasnotRobert started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
It is a flat roof, to which the residents have no access, and is four stories up