Street lighting failures have plunged parts of a large housing estate in total darkness, with problems with the electrical supply stretching back two months.
Up to 13 high-powered lights have been knocked out around the Edward Woods Estate in Shepherd's Bush since the start of the year, creating poor visibility around tower blocks and secluded walkways and leaving some vulnerable residents too scared to go out at night.
The problem has been fixed intermittently by council teams, who carry out regular patrols to check which lights have blown and which need attention, but it is thought ongoing failures may be being caused by someone trying to illegally tamper with the electrical supply.
Community campaigner Angela Valent, of Norland House, said: "Elderly people just haven't been able to get out in the evening after nightfall, because it is so dangerous.
"There are thieves and drug addicts around and the pathways are full of potholes and very uneven. The estate has been in darkness, and health and safety has gone down the drain."
Work to bring all the lights back into operation was finally completed last week following a meeting with residents, and investigations into the cause of the problem are ongoing.
Work is also under way on a complete £12.2m refurbishment of the estate's three 24-storey tower blocks, which are being fitted with solar panels that will run the length of the buildings and two wind turbines on top of each tower, to provide enough power for communal lighting, lifts, CCTV and door entry systems.
Luxury penthouse apartments are being created on the top floors, with future occupants sharing lifts with existing residents.
A council spokeswoman said: "We are aware of several recent problems with the lights and our engineers are doing all they can to make sure the supply is permanently fixed. Broken lights in the Edward Woods estate have been repaired and the street lights are now fully restored. We will however continue to investigate the defects and monitor the situation.
"We are grateful that residents take an active role in their estate and would always ask that any problems are reported to us."