Fill that hole: Report pothole hazards on your routes - fix potholes

Obviously not the irrepairable damage that you cause, but where the average vehicle is less than 425,000 tonnes, there have been some successes. (TfL is the highway authority here, not the council.)

The main problem in London is that most streets are based on nothing very durable, have long histories of many successive layers of road-building/reinforcement, underground services, and consequent excavation and often subsidence under them, not to mention things like underground watercourses and the like.

This hole is not a very serious case of damage, although PQR is right that it's very hazardous for riders. In this case, I'm pretty certain that it would have been the private contractor pictured on StreetView that may or may not have worked for TfL. They evidently rebuilt whatever is under this service cover, but their reinstatement of the surround wasn't strong enough or should have been revisited some months later.