Send a close photograph of the damage and another showing the full fence run. Note whether the problem appeared suddenly or has become more noticeable over time. If several sections move, identify each one rather than photographing only the most obvious defect. Do not push or lean on unstable fencing to demonstrate it.
Leave the damaged area accessible for assessment and keep people away from loose sections. Tell us about plants growing through the fence or items resting against it. In small London gardens, the damage can be partly hidden behind sheds or dense growth; a view of those restrictions helps us plan access.

