Just another point -> "Anyone in the UK can start a car repair business without needing a certain level of experience or expertise. This is completely legal"

In most places you can repair your own car, buy parts, change breaks, Pour any liquid you want into the petrol tank, or the motor oil compartment. Imagine how dangerous that is!

And people sit here making up contrived scenarios "what if you repair your iphone battery, and then eat the old iphone battery! While on a plane! With a gas leak! With kids nearby!"