We have a contract for electrical work for our county council, none of which involves PAT. Most of the call outs I have attended have been amusing, I see green pass stickers everywhere. Fused spurs, socket outlets and even one on a three phase board.The most recent one was a bain marie rated at 3kW with the 16amp plug cut off and replaced with 0.75mm three core flex connected to a 13amp plug top. The current draw was 11.5amps, so the 13amp fuse could hold it but the cable effectively became a heating element.
However it must have been safe because a green sticker was fixed to the cabinet saying so.