Enforcement are responsible for investigating alleged breaches of planning control.
A breach of planning control may involve either
Carrying out development without planning permission, where permission is required, is not itself a breach of law.
If you suspect a breach of planning control has/is taking place you may report this online using the Enforcement Complaint Form.
Alternatively you may write to
When reporting a breach it will be necessary for you to describe the exact location and the harm caused by the development/activity.