Any ‘Notification’ from these bodies is sent to inform you of an official transaction.  These are in turn the result of complicated legal processes which you may lose if you neglect to act  upon the Notification in a timely manner.  Be aware that when a Notification reaches you this means that a judicial action has been started in which you are named and to which you must respond.  Should you not respond when you are the opponent in a Civil Court, this will be taken to mean that you deny all claims against you.  Should you not respond when you are the claimant in a Civil Court, it means that you forfeit important rights such as the primary submission of evidence to the Court and the opportunity to respond to the evidence presented by the other party.  If you neglect to respond to Payment Orders issued by Civil Enforcement Offices, it is taken to mean that you accept responsibility for the debt and undertake to pay the sum charged.  Perhaps most crucially, should you fail to respond to the Notification issued by the Criminal Court, you risk arrest by the police.