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Complaints and reporting illegal gas workers

Report an illegal gas worker

If anyone is doing gas work in the United Kingdom, Isle of Man, Guernsey or Jersey and they are not Gas Safe registered, they could be working illegally. Did you know:

  • Approximately two thirds of illegal gas work inspected by the Register has been found to be unsafe.

  • Using an illegal gas worker could invalidate the warranty on your boiler and may invalidate your home insurance.

  • If you have any information on businesses or individuals carrying out illegal gas work, you can report them.


Report illegal gas worker

Complaints against Gas Safe registered businesses

We are happy to investigate any gas safety complaints you may have about work carried out by a registered engineer, be it at your property or another address.


Make a complaint about a Gas Safe
registered business


It doesn’t have to be work carried out at your property for us to look into it further – although if it isn’t, it’s often helpful to us if you can provide as many details as possible including those of the homeowner/tenant so we can contact them to book an inspection if necessary. Find out more about the process for investigating concerns and what we are and are not able to investigate.