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.




    Training 25th & 26th July 2022

    Assessments 27th, 28th & 29th July 2022


    Training 22nd & 23rd August 2022

    Assessments 24th,25th & 26th August 2022


    Training 19th & 20th September 2022

    Assessments 21st ,22nd & 23rd September 22






    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.