The first obligation on a driver following an accident is to stop and exchange relevant details. If you stop at the scene of the accident and nobody is there with whom to exchange details you must report the accident to the police as soon as possible and, in any case, within 24 hours. It is important to understand that this does not mean that you have 24 hours to report an accident. You must report as soon as possible (and within 24 hours). Furthermore, the reporting of an accident to the police needs to be made in person rather than by a telephone call.
Prosecution & Defences
It is quite common for a driver to be prosecuted with the two separate charges. In order to secure a conviction, the prosecution requires to prove that the driver involved in an accident failed to stop and/or provide relevant details to anyone reasonably entitled to ask for them. However, problems frequently arise in relation to identification of the driver at the relevant time. A successful defence can be established if the driver was unaware that an accident had occurred or that he attempted to report the matter by, for example, waiting for a reasonable period of time before leaving the scene.