We currently provide services and support to companies and individuals in Humberside, East Yorkshire, North Lincolnshire, North East Lincolnshire, South Yorkshire, West Yorkshire, Teeside, London, Portsmouth, Plymouth, Southampton, Hampshire, Oxfordshire and Wales.

Core Domestic Gas Training

The Core Domestic Gas course is suitable for engineers needing to renew their domestic natural gas qualifications or as a progression for new entrants having recently achieved the ERS MLP Certificate qualification via Crownships New Entrants to the Gas Industry route.

  • Gas Safety Legisaltion
  • Emergancy Actions and Procedures
  • Characteristics of Combustion
  • Ventilation
  • Installation of Pipework and Fittings
  • Tightness testing
  • Identifications of Unsafe Situations
  • Emergency Notices and Warning Labels
  • Flueing Standards
  • Meter Regulators (Check / Setting)
  • Emergency Isolations Controls and Valves
  • Appliance Burner Pressures / Gas Rates
  • Operation / Checking of Appliance
  • Safety Devices / Controls
  • Installation of Open / Balance Fan Assisted Flue Assemblies
  • Procedures for Establishing / Re-Establishing Gas Supply
    All of the above are tutorial with practical demonstration and simulation
    Next stop…..
    CCN1 Assessment or New Entrants into the Gas Industry

    Our Website

    This website explains how we approach, develop and implement activities and why we are recognised for our free flowing, informative delivery, bringing information alive by adopting a specialist approach for organisations. Select from the top to access our range of management courses, electrical courses, plumbing courses, air-conditioning and refrigeration courses, f-gas regulations course, ACS gas domestic, commercial & new entrants training & assessment and NEBOSH general certificate and various health & safety courses.



    Scheduled dates:

    ( Training is Optional )

    Training: 9th & 10th January 2023

    Assessments: 11th, 12th & 13th January 2023


    Training: 13th & 14th February 2023

    Assessments: 15th, 16th & 17th February 2023


    Training: 20th & 21st March 2023

    Assessments: 22nd, 23rd & 24th March 2023


    Training:17th & 18th April 2023

    Assessments: 19th, 20th & 21st April 2023


    More dates available to suit




    Don't Let Your Ticket Lapse!

    Domestic Gas Re-Assessments

    CCN1 & Any Domestic Appliances

    Package Price £945 + vat

    Including 2 days training, certification fees & up to date gas publication

    Please give us a call on 01652 658151 or Email






    Freelance Assessors required in plumbing, air-conditioning, refrigeration, gas and electrical. Please email your CV and state which field of expertise you can cover.








    Head Office:

    Crownship Developments Ltd,

    Charlton House Mews,

    Bridge Street, Brigg,

    North Lincolnshire,

    DN20 8NQ


    Technical Centre:

    Crownship Technical,

    Unit 13,

    Temple Street Unit Factory Estate,

    Station Drive,


    HU5 1AD


    Telephone Number: 01652 658151

    Fax Number: 01652 658221



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    Recent Testimonials

    Here is some of our satisfied customers.