This initial assessment applies to anyone who is looking to be assessed on an appliance of any kind for the very first time. Participants will be assessed under three categories. Category 1 applicants are those who are undertaking assessment on an appliance which they have not previously held certification for. Category 2 applicants are those who hold nationally recognised qualification and who can provide evidence of "on-the-job" gas installation and/or maintenance gas work. Category 3 applicants are new entrants who are unable to provide a relevant related qualification and/or experience. Upon successful completion of CCN1 and at least 1 appliance, they will be eligible to approach Gas Safe Register (CORGI replacement).