The organisers of a march are required to give advance written notice of the march to the local police force. The notice, which can be in the form of a letter, should be given at least a week before the march by being sent recorded delivery or hand delivered to a police station. The notice should set out the date and start time of the proposed march and its route. It must also include the name and address of at least one of the organisers. Anyone who organises a march and doesn't give the required notice commits an offence for which he/she can be fined up to £1,000. Unless this arises from circumstances beyond his/her control the organiser also commits an offence if the date, start time or route of the march differs from those notified to the police.