Gas Safe Register is the only official gas registration body of gas businesses and engineers in the United Kingdom, Isle of Man, Jersey and Guernsey. By law all gas businesses must be on the Gas Safe Register.
A gas engineer can only be aligned to a registered business and be issued with a license to undertake gas work on behalf of a registered business if they hold a valid and current qualification. This evidence of competence relates only to matters of gas safety and is obtained by every engineer through a recognised route of training and assessment (much as the DVLA issues driving licences to those who have demonstrated their competence by passing a driving test).
Registration is only given on the basis of the business having at least one gas safety qualified engineer.
To check if an engineer is registered with gas safe click here