Essex 1 (known as Essex/Canterbury Jack 1 for sponsorship reasons) is an English Rugby Union league at the ninth tier of the domestic competition and features teams from Essex and parts of north-east London. Promoted clubs tend to move up to London 3 Essex. Relegated clubs used to drop into Essex 2 but as that division has been abolished there is currently no relegation. The division was created in 2003 by Essex-based teams who left Eastern Counties 1 and Eastern Counties 2. Each year some of the clubs in this division also take part in the RFU Junior Vase - a level 9-12 national competition.