Canada has similar laws as USA, UK has the same situation as most of Europe where you can lie to the police and they can't lie to you. So I think the advice is

Canada has similar laws as USA, UK has the same situation as most of Europe where you can lie to the police and they can't lie to you. So I think the advice is mostly for countries like USA and Canada with reverse rights, that is the police has more rights than you. In Europe where you have more rights than the police talking to them is safer than talking to a civilian.