When a person is in the exercise of his trade at a premises (eg, an electrician), that person will appreciate the special risks associated with his trade and will guard against them. This means the occupier will be free to leave the tradesman to do just that and will not have a higher duty of care placed upon them.
Bro your own link contradicts you
The wording “guard against them” means they’re certified and insured. But if you call a random dude from the ad, you can get fucked real hard.
So if you call a random guy instead of someone working in that field and he falls then you can be liable, thats pretty different from what you said…
i am not a lawyer, but I am pretty sure they would also have to prove that you knew the guy wasn’t an actual tradesman.