“It is well known that “perversity” represents a very high hurdle. In Miftari v SSHD[2005] EWCA Civ 481 , the whole court agreed that the word meant what it said: it was a demanding concept. The majority of the court (Keene and Maurice Kay LJJ) said that it embraced decisions that were irrational or unreasonable in the Wednesbury sense (even if there was no wilful or conscious departure from the rational), but it also included a finding of fact that was wholly unsupported by the evidence, provided always that this was a finding as to a material matter.”
“In assessing the general human rights information, decision-makers must constantly be on guard to avoid implicitly recharacterizing the nature of the risk based on their own perceptions of reasonability.”