Yesterday, the Supreme Court handed down judgment in Hayes v Willoughby  UKSC 17 and upheld (for different reasons) the Court of Appeal decision. My post following the Court of Appeal can be read here.
To recap, Mr Willoughby was employed by one of Mr Hayes’s companies. After they had fallen out, for some 7 years between 2002 and 2009 Mr Willoughby had waged what was described “a lengthy and persistent campaign of correspondence and investigation” of and about Mr Hayes centring on allegations of fraud, embezzlement and tax evasion in relation to Mr Hayes’s management of his companies.
This took the form of sending numerous letters to the Official Receiver, the police and the Department of Trade and Industry (the Official Receiver alone estimated that he had received 400 communications) which continued after the bodies investigated and found no basis in the allegations.
As readers know well, the Protection from Harassment Act 1997 (“the Act”) makes harassment a civil wrong and a criminal offence. However, under s.1(3) of the Act it is a defence for a person to show (a) that it was pursued for the purpose of preventing or detecting a crime.
The trial judge had found that Mr Willougby’s conduct constituted harassment but that he had a defence under s.1(3)(a) because he genuinely believed in the allegations involving Mr Hayes and wished to persist in investigating them. Although there were other actions which could not be justified as conduct to prevent or detect crime, they did not constitute a separate course of conduct and therefore were protected by the campaign as a whole not being unlawful.
The Court of Appeal allowed Mr Hayes’s appeal on the ground that the defence is confined to a course of conduct the only purpose of which is preventing or detecting crime. There is no reason to protect a defendant whose course of conduct constitutes harassment because one of the purposes is the prevention or detection of crime unless his course of conduct as whole was reasonable.
The Supreme Court has dismissed the appeal by Mr Willoughby by a majority of four to one (Lord Reed Dissenting) and doing so has introduced another concept into interpretation of conduct under the Act; ‘rationality’.
In the context of the defence, the prevention or detection of crime need not be the sole purpose of the alleged harasser, but only the dominant one. If that is so, that purpose will afford a defence provided that the purpose is rational. Broadly speaking, this test lies between pure subjectivity (the view of the perpetrator alone) and objectivity (the view of the mythical ‘reasonable man’).
As Lord Sumption puts it “A test of rationality only applies a minimum objective standard to the relevant person’s mental processes. It imports a notion of good faith in requiring some rational connection between the evidence and the ostensible reasons for the decision, and an absence of arbitrariness, capriciousness or reasoning so outrageous in its defiance of logical as to be perverse.
If the alleged harasser has rationally applied his mind to the material suggesting criminality and formed the view that the conduct said to constitute harassment was appropriate for its detection or prevention, the court will not test his conclusions by reference to what view a hypothetical reasonable man in his position would have formed.
If he has not done so but proceeds anyway, he acts irrationally. He will not have a relevant purpose and there will be no causal connection between his purpose and the conduct constituting harassment.“
Here, this tests meant that after June 2007, Mr Willoughby’s conduct against Mr Hayes was irrational. He was no longer guided by any assessment of evidence, nor was there a rational connection between his supposed purpose and acts. By persisting in pressing his allegations on the Official Receiver and other investigatory bodies long after they refused to deal with him, he was acting in way that was incapable of furthering the alleged purpose.
The decision provides useful clarification of the application of the defence and will make it difficult to bring a claim for harassment where it is invoked. The defence is not, as first thought, limited to authorities such as the Police but is available to anyone who is pursuing a course of conduct for the purposes of detecting or preventing crime. In justifying that professed purpose, it is not necessary that the purpose be objectively reasonable; the onus will be on the person claiming harassment to show that the purpose was irrational.