The only time that this is not required is if the accident was a ‘Front’ to ‘Rear’ and no one suffered any injuries. In such circumstances, you and the other driver need to both complete and sign the ‘Front to Rear’ form and each driver takes a copy. A warden is to be called on site for all accidents involving third parties when no one sustained any injuries; whilst if as a result of the accident anyone is injured you need to call the police on site, you are also obliged to call the police following a hit-and-run, theft, or if you have an accident with no third-parties involved. Do ensure that if you are calling a warden or the police authorities, you do not move your vehicles until they arrive and take details of the accident.