I sometimes had complaints about upgraded lights shining in bedroom windows and would get the council to add a light shield to cast a shadow on said windows.
White light is better for people walking around ot see whites of eyes and whether someone looking at you. Apparently better for street safety.
I had been seeking for street lights to be remotely monitored and controlled - fab cost saving as avoids having council officers on 'night patrolling' looking for dead street lights. They can then also be remotely turned down. Sadly not implemented yet.
former Liberal Democrat Councillor for East Dulwich Ward (2006-2018)