These courses are designed for either:

  • New entrants into the gas industry who have completed a recognised plumbing qualification.
    • EU skills approved City & Guilds craft certificate or NVQ level 2 or equivalent, and
    • A written summary of your 'on the job' work experience, and
    • An evidence portfolio with a minimum of 6 different gas appliance installations.


  • Existing plumbing and heating engineers renewing gas qualifications (Reassessment).
    • CCN1 re-assessment can take place up to 6 months early without losing time.
    • Candidates must produce original or previous certificates as demonstrable evidence.
    • We always suggest that training is undertaken prior to reassessment.
    • Although not mandatory, we do advise that training is often beneficial due to statutory or industry changes.

Entry Requirements

For further guidance on entry requirements: see suitable and non suitable qualifications downloads.


  • Reassessment must take place within the 12 months following the certificate expiry date, in order not to have to retake their initial assessment. Candidates may also undertake re-assessment of any element up to 6 months early without losing any time
  • Operatives undertaking gas assessment for the first time must complete a recognised training programme.
  • Candidates undertaking initial assessments for the first time should allow at least half a day per module for assessment.
  • Candidates must produce any previous certificates as proof of evidence prior to reassessment.
  • All candidates who wish to undertake gas training and/or assessment must produce evidence of their qualifications and meet required category 1 or 2 or the following criteria:
    • Category 1 candidate is a fully experienced gas operative and has a gas fitting qualification or certificates of gas safety competence.
    • Category 2 candidate is already involved in a trade associated with gas work, e.g. plumbing, or holds a nationally recognised qualification e.g. NVQ2, City & Guilds craft certificate for the associated trade association.