In our humble opinion, to be able to do PAT testing, and to confirm an appliance is safe a person needs to be competent. To become competent they need suitable training, such as on a course or an in-house training programme as a new PAT tester in a PAT testing company. They also need to be qualified, City and Guilds 2377 is the industry standard. They also need experience, which you can only get on the job working alongside other more experienced engineers.