The Jeremy Kyle Show on ITV advertises the lie detector test as being 96% accurate.
This is clearly stated on screen on a daily basis.
Whether that is true or not, (though it should be) ... this mechanism is used to absolutely castigate people and label them for the rest of their lives.
If Wikipaedia is correct, and I know Wikipaedia's content is unregulated, then the actions of this prime time TV show are a national scandal, and possibly criminal.