Promotion through these levels is controlled by The FA and is dependent on observations and undertaking an enhanced fitness test. On successful promotion referees will operate as follows:
• Level 4 - Referee in a Supply League and an Assistant Referee on the Contributory League
• Level 3 - Referee on the Contributory Leagues and Assistant Referee on the Panel, Panel Select, Football League or Premier League (Promotion Pathway for Assistants Referees begins at Level 3)
• Level 2b - Panel List referee on the Panel Leagues
• Level 2a - Panel Select List Referee
• Level 1 - National List Referee
The final promotion would be on to the International List (FIFA).