Portable Appliance Testing Training Courses from Pat Testing Expert Learn from the Expert! Our PAT Testing courses are all led by Tim James - who has over 20 years experience in the field of PAT Testing and is regarded by many as the UK's leading PAT Testing Expert Our course follows the latest guidance from the IET and HSE (complying with the 2008 edition of the IEE Code of Practice for In-Service Inspection and Testing of Electrical Equipment)