If I invited a contractor into my home and I knew there was say exposed live electricity wires. Even if the contractors was not damaged - I should be prosecuted

If I invited a contractor into my home and I knew there was say exposed live electricity wires. Even if the contractors was not damaged - I should be prosecuted. So he exposed someone to a risk that was avoidable. Any other Health and Safety risk, would have been prosecuted in the same way (in the UK not Australia). [CDM regulations]