“8.3. It is for the employer to show the ground on which any act or deliberate failure to act was done (ERA s.48(2)). Clearly the reason for any detrimental treatment may not necessarily be overt or overtly expressed such that the Tribunal will look at the mental processes of the decision makers, conscious or unconscious, to determine whether or not the protected disclosure “caused”, in the sense described above, the detrimental treatment.” 23. The ET also noted, in paragraph 8.4 of its Reasons, that it was agreed, when canvassed with counsel, that it was unnecessary and would indeed not necessarily be possible for the ET to link each alleged detrimental act with one or more particular disclosures. Within a longer discussion in paragraph 8.4 the ET said: “The Tribunal recognises further that disclosures made at an early stage may still at a much later stage have a causative effect on decisions taken by/on behalf of the Respondent.” 24. Within section 9 of its Reasons the ET considered in great detail, and with evident care, whether the detriments were materially influenced by the protected disclosure. It built upon findings concerning the detriments which it had set out in section 7 of its Reasons. It is impossible to do justice to the detail of this reasoning without extensive quotation which would overburden this Judgment. What follows is very much a summary. 25. On the question whether the removal of C from Operation 1 was materially influenced by his protected disclosures, the ET noted the close association in time between G’s conviction and C’s protected disclosures: see paragraph 9.29 of its Written Reasons. 26. The ET was sceptical about the significance which the Respondent sought to place on G’s conviction and sentence: see paragraph 9.30 of its Reasons. It said that the reaction of the Respondent’s officers needed to be carefully examined in the period after C raised the April disclosures: see paragraph 9.31 of the Reasons. It began this examination in paragraphs 9.32 to 9.39 of its Reasons. It noted the “lack of active consideration of risk” until after D was informed of the disclosures and complaints which C had made on 5 April. Building on reasons which it set out in those paragraphs it said: “9.40. The Tribunal considers that it is likely that the risk assessment process would have been taken little further forward and certainly that [C] would not have been removed from deployment had an effective accommodation and meeting of minds been achieved at the meeting attended [C] with [H] and [D] on 30 April.” 27. The ET continued its examination in paragraphs 9.41 to 9.48 and in subsequent sections of its Written Reasons. It noted that by 26 June (when the decision to remove C from Operation 1 came into sharp focus) and1 July 2013 (when it was taken) it was “difficult to ascertain what had changed in terms of senior management intelligence”
“There is no evidence that [C’s] protestations of lack of risk or lack of change of risk were seriously considered. The risk assessment prepared comes across as self-serving and whilst the Tribunal casts no doubt on [X9’s] own integrity in his peer review assessment, it does observe that [X9’s] assessment was based on what he was allowed to know and on a particular slant given to the information provided.” 29. The ET addressed the question whether B’s treatment was materially influenced by the protected disclosures in paragraphs 9.65 to 9.81 of its Reasons. The Respondent relied principally on the tattoo as justifying B’s removal from undercover duties. 30. The ET said (paragraph 9.71): “At first blush the issue of [B’s] tattoo appears to be a very real one in circumstances where [B] could be criticised as being extremely foolhardy and exhibiting a lack of judgment in having such a distinctive tattoo in such a distinctive position. However the evidence is of a number of undercover officers having distinctive tattoos and/or certainly in the case of […] being of sufficiently distinctive appearance as to significantly lessen the legitimate reliance which might be placed upon a risk arising out of [B’s] particular tattoo.” 31. Later it said (paragraph 9.76): “The Tribunal has no difficulty linking this detrimental treatment with [B’s] raising protected disclosures. They were a material influence. Again, his treatment has to be seen running in parallel to that of [C] and the fact that the Respondent saw him as working together albeit in a slightly subordinate capacity to [C]. … As already discussed, the tattoo issue could have been easily dealt with if it was such a problem as the Respondent maintains and on the basis of all the evidence of others with tattoos and distinctive features the Tribunal cannot accept that to be the case.”
“Such an appeal ought only to succeed where an overwhelming case is made out that the ET reached a decision which no reasonable tribunal, on a proper appreciation of the evidence and the law, would have reached. Even in cases where the Appeal Tribunal has “grave doubts” about the decision of the ET, it must proceed with “great care”, British Telecommunications PLC v Sheridan[1990] IRLR 27 at para 34.” 38. He explained (paragraphs 94 and 95): “94. Over the years there have been frequent attempts, consistently resisted by the Employment Appeal Tribunal, to present appeals on fact as questions of law. The technique sometimes employed is to trawl through the Extended Reasons of an ET, selecting adverse findings of fact on specific issues on which there was a conflict of oral evidence, and alleging, without adequate particulars, supporting material or even proper grounds, that these particular findings of fact are perverse and that therefore the overall decision is perverse. An application is often made to obtain the notes of evidence made by the chairman in the hope of demonstrating that the notes are silent or incomplete on factual points, that the findings of fact were not therefore supported by the evidence and that a question of law accordingly arises for the determination of the Employment Appeal Tribunal. 95. Inevitably there will from time to time be cases in which an ET has unfortunately erred by misunderstanding the evidence, leading it to make a crucial finding of fact unsupported by evidence or contrary to uncontradicted evidence. In such cases the appeal will usually succeed. But no appeal on a question of law should be allowed to be turned into a rehearing of parts of the evidence by the Employment Appeal Tribunal. I am, of course, well aware that this is easier said than done, especially when, as here, neither side was legally represented on the first level of appeal. As the Employment Appeal Tribunal was well aware, unrepresented litigants have understandable problems in separating questions of law from proof of facts and in distinguishing the making of legal submissions from submissions of fact, even giving evidence in the course of submissions.” 39. It is, I think, also important that in assessing whether an ET has made perverse findings the EAT should keep in mind limitations and dangers which apply whenever an appellate court is asked to review the conclusions of a fact-finding tribunal. The appellate court does not have the advantage of seeing and hearing the witnesses; it is difficult, even in a detailed judgment, for a fact-finding tribunal to capture in words all the impressions it will have received from hearing the evidence. The appellate court is likely (as in this case) to see only a fraction of the documents and it will not be immersed in the detail of the case; it will tend to concentrate on particular points chosen by the advocates and must keep in mind that these were part of a bigger picture considered by the ET. 40. Having measured the Respondent’s arguments against the standard set by Yeboah , I reject them. I do not think the ET reached conclusions which no reasonable tribunal on a proper appreciation of the evidence and the law, would have reached. I accept the general thrust of the submissions which Mr Millar made to me. 41. In this case - in contradistinction to most perversity appeals - the challenge is not to a specific finding of fact but to the ET’s overall conclusions on the question whether protected disclosures materially influenced the Respondent in imposing the detriments. The overall conclusions were built upon numerous findings of fact; and the ET’s advantage of seeing and hearing the witnesses is considerable. 42. I will address what appear to me to have been Mr Skelt’s principal submissions relating to C. 43. Firstly, he fastened upon what he said was a finding by the ET that the risk concerning G did not cause the Respondent any material concern: see paragraph 9.24 of its Reasons. This was truly perverse because it was inconsistent with the ET’s own findings. The risk posed by G had been raised and discussed with C in 2011 - in particular in November 2011; it had been agreed that further meetings would take place if in the course of investigation of G any intelligence impacted on or created any risk for him: see paragraphs 7.3 to 7.6 of the ET’s Reasons. Therefore the Respondent plainly had a material concern about the matter. 44. I do not accept this criticism of the ET’s Reasons. The ET was well aware that the arrest of G had caused concern to C’s superior officers: it said precisely that in paragraph 9.23. What the ET meant by “material concern” is clear from the preceding sentence - the last sentence in paragraph 9.23 - and from the following sentences in paragraph 9.24. C had disclosed that there were likely to be photographs and videos of him with G including at social occasions. Even so there had been no question of him ceasing to deploy as an undercover officer and there had been no formal written risk assessments. This remained the position throughout G’s trial and after his conviction and sentence. These were valid points for the ET to make. I see nothing perverse about them. 45. Secondly, Mr Skelt pointed to the ET’s findings of fact about what he described as the “flow” of further information as explaining why and how the Respondent acted as it did. In summary, following G’s conviction in 2013 D contacted DCI Wallen, who was responsible for G’s case. DCI Wallen was concerned that G would no longer honour past loyalties while in prison. This led to a report by D dated25 April 2013 which assessed the position of all the undercover officers and in particular set out the close connection between C and G. See paragraphs 7.31 to 7.36 of the ET’s Reasons. By June 2013 it had been established that there were indeed on G’s computer images and video of C. Hence there was a meeting with C on 26 June to discuss the Respondent’s view of the risks to him owing to the G connection. He was asked to consider the matter with his wife and take further security steps. A further risk assessment was undertaken. This led to a decision to temporarily remove from deployment. See paragraphs 7.70 to 7.77 and 7.84 to 7.85. Therefore, Mr Skelt submitted, the Respondent plainly had a proper concern about the matter; it was a policing issue where the ET was bound to give effect to its own primary findings of fact when it decided whether the detrimental treatment was “on the grounds of” protected disclosures. 46. Contrary to this submission, I do not think the ET’s findings of fact about the “flow” of further information bring home a perversity argument. The ET was well aware of the chronology. But the chronology gives rise to substantial questions. Neither H nor D had followed the matter up at all until after D was apprised of the complaints of C. His evidence about his reasons for contacting DCI Wallen was not accepted by the ET - see paragraphs 7.25 and 7.27 - but even if true it would not suggest that D was carrying out a planned risk assessment. C was at this stage left on undercover deployment: DCI Wallen’s information did not lead to C’s removal at a time when (the ET found) D hoped that he would not take his complaints further. Then, however, C did complain to the PSD; and it was after learning about this that he was removed from Operation 1. By this time computer images and video had been found on G’s computer; but the existence of images and video had been made plain by C himself in 2011. It is in my judgment impossible to describe the ET’s findings as perverse. There was evidence upon which the ET was entitled to find that the Respondent’s decisions were materially influenced by the protected disclosures. 47. Thirdly, Mr Skelt relied on the fact that the decision to remove from deployment was sent for peer review to X9. His submission went as follows. As the ET found, X9’s peer review dated18 July 2013 supported the Respondent’s decision. The ET was not justified in saying, as it did, that the information given to X9 was slanted. This peer review was of central importance to the case, since the opinion of the reviewer was independent operational support for the decisions taken by the Respondent. 48. I am not persuaded by Mr Skelt’s submission that the ET was perverse in its approach to the peer review of X9. The risk assessment sent to X9 had been prepared without showing it to C or giving him any opportunity to comment on it, still less to speak to X9 himself. It presented as a feature adverse to C what he would have emphasised as a feature in his favour: he was close to G, […], and it was (he would have pointed out) inherently unlikely that G would endanger him as an undercover officer. It said that it “transpires” that C had been caught by G on images and video; it did not clearly say that the Respondent had known that this was likely since 2011 and had continued his deployment. I have no doubt that if C had been permitted to comment, and X9 had seen his comments, he would have had a quite different slant on the assessment of risk. 49. Moreover the ET was correct in law to concentrate upon the motivation of those who were responsible for the decisions relating to C. Mr Skelt accepted and indeed submitted that this was the law: he was in my judgment correct to do so. He cited Co-Operative Group v Baddeley[2014] EWCA Civ 658 at paragraphs 40 to 43 and 51; these paragraphs are in fact concerned with the rather different test insection 103A of the Employment Rights Act 1996 applicable to dismissal, but the general proposition is not in doubt. X9’s review was not central to the question the Employment Tribunal had to determine for liability purposes: this depended on those who took the decisions relating to C, not upon X9 who was only responsible for reviewing them on limited information. 50. Fourthly, Mr Skelt criticised the ET’s finding that the refusal of the Respondent to show C the risk assessment information between 26 June and 23 July was materially influenced by his protected disclosures. He criticises in particular its finding that this was “not an ordinary risk assessment but one which took place without any significant involvement from [C] himself”