“The first sentence appears to overstate paragraph 24 of Yewdal l. The mechanism may be similar, but that does not mean that it operates in the same way, and nor is this what the Employment Appeal Tribunal said.” 32. I interpose that, in the passage in the EAT’s decision in Dahou , which refers to the earlier EAT decision in Yewdall v SSWP ,UKEAT/0071/05 , Simler J went on to draw attention to the fact that, unlike the burden of proof provisions in theEquality Act 2010 (“EqA”), under these provisions of the ERA , a shifting of the burden, and a failure by the employer then to persuade the Tribunal of its innocent explanation does not automatically lead to a finding in favour of the employee. 33. There was no disagreement before me today as to the salient propositions that can be extracted from this body of authority, and I would summarise them as follows. Firstly, it will not necessarily follow, from findings that a complainant has made a protected disclosure, and that they have been subjected to a detriment, alone, that these must by themselves lead to a shifting of the burden under Section 48(2). The Tribunal needs to be satisfied that there is a sufficient prima facie case, such that the conduct calls for an explanation. 34. Secondly, if the burden does shift in that way, it will fall to the employer to advance an explanation, but, if the Tribunal is not persuaded of its particular explanation, that does not mean that it must necessarily or automatically lose. If the Tribunal is not persuaded of the employer’s explanation, that may lead the Tribunal to draw an inference against it, that the conduct was on the ground of the protected disclosure. But in a given case the Tribunal may still feel able to draw inferences, from all of the facts found, that there was an innocent explanation for the conduct (though not the one advanced by the employer), and that the protected disclosure was not a material influence on the conduct in the requisite sense. 35. It was common ground before me, correctly, that material influence is indeed (or one of the synonymous ways it is expressed in some authorities - it is all the same test), the test which the Tribunal should be applying. I add that it needs to be borne in mind that, where the claim is of unfair dismissal, under section 103A of the 1996 Act , as the test there is “reason (or, if more than one, the principal reason)”, there can be mixed reasons, but there cannot be more than one sole or principal reason. (A similar point applies in relation to the detriment test under Section 146 of the 1992 Act considered in Dahou - referring to “sole or main purpose”.) However, where the test in section 47B of the 1996 Act applies, it is possible for the Tribunal to find that more than one matter was a material or contributing influence or ground. In such a case, therefore, where it is argued, or the Tribunal considers, even if it is not any party’s positive case, that one or more of a number of different influences may be at work, it will potentially be open to it to find that more than one of them was a material or contributing influence. The Appeal - Grounds and Arguments 36. I turn to the grounds, and the parties’ arguments, in relation to the main appeal. I take the grounds of appeal and the arguments together, because the original grounds were somewhat discursive, with elements of repetition, and they were brought more into focus by Ms Garner’s written and oral submissions for the hearing of the appeal itself. In each case I have considered all the arguments, but will set out what seemed to me to be the main or most pertinent points. Claimant’s Case 37. I would summarise the headline basis for this appeal as follows. 38. Firstly, the Tribunal wrongly stated the underlying legal test of what it means for treatment to have been on the ground of the complainant having made a protected disclosure; or, alternatively, if it stated the test correctly, it did not apply it correctly. Secondly, the Tribunal failed properly to state and address how the burden of proof works in relation to such a claim, including by failing to cite specifically Section 48(2) of the 1996 Act . Alternatively, it, in any event, took the wrong approach to the burden of proof, wrongly assuming either that the burden lay on the Claimant, or at best for him that the burden was neutral. 39. More specifically, the Tribunal failed, or failed sufficiently, to engage with the mental processes of the individuals said to be responsible for the detrimental treatment. There was an insufficient analysis of whether, in the requisite sense, the reasons for the detrimental treatment were the reasons put forward by the Respondent, the reasons put forward by the Claimant, or other reasons that emerged from the overall constellation of facts; and hence of whether among the reasons, those relied upon by the Claimant did play a material influencing part. There was insufficient analysis of this by reference to each of the detriments separately identified as having been asserted, of which there were some 12 in all. Rather, these were dealt with compendiously in two short paragraphs, 13.4 and 13.5 of the Tribunal’s Decision. 40. The Tribunal had also failed to give sufficient attention to the implications of the fact that the reasons advanced by the Respondent were not found by it entirely to hold good. These were briefly mentioned in paragraph 4.8, where it was said that it was because of patient care issues that the Claimant was subject to an investigation, but were not mentioned again in paragraphs 8.1 or 13.1. 41. The Tribunal had also not paid sufficient attention to the fact that there were two incidents in December which the Respondent was relying on, as having given rise to genuine performance concerns and, in turn, the investigation. The first was the one that led to Mr Hodgkinson emailing Sister Taylor encouraging her to take up her concerns with the Clinical Director, and the second was the one involving the complaint by Ms Nevin. The Tribunal had only specifically referred to the second of these (assuming that that was what it had in mind when it spoke of the last incident). The Tribunal had also not engaged with its own findings, in particular that Mr Hodgkinson and Mr Clarke between them had withheld from the investigation the statement of another colleague, Mr Sorial, that was favourable to the Claimant, and that they had omitted him from the list of witnesses who might be interviewed. 42. The Tribunal had found that Mr Hodgkinson may have “seized on” the complaints of Ms Taylor and Ms Nevin, but had not considered why he had chosen to seize on them, and to escalate matters into an investigation procedure, in the way that he had. The Tribunal had also misled itself by referring to the Claimant’s actions having put the new rota “in jeopardy”, because ultimately the new rota was adjusted to ensure that, on occasions when consultants were on call for emergencies, elective procedures were confined to those that could be carried out by Registrars or more junior doctors. 43. The real point, said Ms Garner, was that, by raising his concerns about the rota, and in particular by referring to RCS Guidance, the Claimant had embarrassed Mr Hodgkinson in relation to this new rota, which was Mr Hodgkinson’s project. Also, said Ms Garner, the Tribunal had failed to address the implications of its own findings in paragraph 12.6, that there was an appalling lack of recordkeeping, in paragraph 12.8 that the Tribunal was not clear why Mr Hodgkinson and Mr Clarke thought they should “meddle” in the investigation, and in paragraph 12.9, about the withholding of Mr Sorial’s statement, and that the failure to review the restrictions on the Claimant’s practice over the months of the investigation, causing him to be deskilled, and the failure to review his sickness absence, were “astonishing”. 44. There was a further strand to the appeal, to the effect that the Tribunal had wrongly assumed that there was a legal requirement for a finding of collusion in respect of the allegations that involved Mr Clarke and Mr Welch, together with Mr Hodgkinson. However, in her submissions to me today Ms Garner, whilst not resiling from that proposition, did not particularly rely on it. Rather, she said, the point in relation to this observation in paragraph 13.5, which supported her main grounds of appeal, was that the Tribunal had found that Mr Hodgkinson, Mr Clarke and Mr Welch had been involved in mutual discussions and decisions; and so had not sufficiently explained why its observation about the need for collusion caused it to reject the complaints of detriment to which it was referring in that paragraph. Respondent’s Case 45. Ms Belgrove’s main points were as follows. 46. Firstly, the Tribunal plainly understood the underlying legal test that they had to apply, referring in terms at paragraph 13.1 to the test of whether the disclosure was more than a trivial element in the decision to initiate capability proceedings, and again in paragraph 13.3 to whether it had a material influence on the behaviour of Mr Hodgkinson, and/or other members of the team. Further, the Tribunal had plainly applied that test, because in paragraphs 13.4 through to 13.6 it rejected any matters to do with the Claimant’s concerns about the new rota as having had any influence on the treatment complained of. It said in terms in paragraph 13.6 that the treatment was not as a result of his disclosures. 47. On the question of the burden, whilst acknowledging that the Tribunal had not cited Section 48(2), Ms Belgrove submitted that it was nevertheless clear that it was aware of the appropriate approach to take, given its citation from paragraph 51 of Fecitt in its summary of the law, and its findings as to the positive reasons for the detriments, and to the effect that it was satisfied as to what these were. 48. As to the point about there having been two incidents in December, Ms Belgrove said they were all of a piece, because the general concern of the Sister was about the Claimant’s interactions with nurses for whom she was responsible, and the complaint by Ms Nevin was a specific example of this, that was said to involve a particularly confrontational encounter, which brought this issue to a head. 49. Nothing of significance could be read into the Tribunal’s reference to the question of whether Mr Hodgkinson had been motivated by the Claimant having put the rota in jeopardy, as that was simply a shorthand for the Claimant’s acts of whistleblowing as found. Generally, submitted Ms Belgrove, the Tribunal’s findings were sufficiently detailed and clear in its concluding section, which consisted not just of paragraphs 13.4 and 13.5 but began at paragraph 13.1, and needed to be read as a whole, and set against the background of the various earlier detailed findings of fact, on which it drew. 50. In particular, those findings set out clearly the factual background for the Tribunal’s conclusions that the Claimant had come into a hostile environment and a fractured department, that there had been some concerns raised about performance issues, and friction between him and Mr Hodgkinson, from the outset, and dating from well before the time when he made the first of his protected disclosures. Further, the Tribunal reasonably grouped the multiple detriments into those that involved the role of Mr Hodgkinson in raising various matters that led to the investigation process getting under way, and then those that related to the unfolding of that process itself, once Mr Clarke and others became involved. Further, the Tribunal had made a clear finding as to why all of these detriments occurred, and that it was because of the background which owed nothing to his protected disclosures, and was an established feature of the situation before those disclosures were made. 51. The Tribunal was also entitled to refer to the fact that, insofar as Messrs Clarke and Welch were said to be implicated, that would have to have involved some collusion, and to conclude that there was no sufficient reason to conclude that there was such collusion, having regard to what it found to be the true explanation, which focused on the Claimant’s relationship with Mr Hodgkinson. Discussion and Conclusions 52. I start with the question of whether the Tribunal sufficiently stated the law in terms of the basic legal test to be applied by it. I agree with Ms Belgrove that the Tribunal correctly and fairly stated the test, as such, as being whether the disclosures were more than a trivial element, or had a material influence on the conduct complained of. Various phrases have been used in the authorities over the years, but they all mean the same thing, and the Tribunal clearly had the correct test in mind when it used these phrases. 53. However, what the Tribunal did not specifically remind itself of was that, in order to decide this question, consideration has to be given to the mental processes of the individual or individuals concerned. This is important particularly in a case where, as I have said, it is possible that there may have been a number of influences, and more than one material influence, on the mind of the individual or individuals concerned. The Tribunal did not say anything that incorrectly stated the law on this point, and therefore this omission is not necessarily fatal to the integrity of its decision; but it means that, in reviewing its decision, I have to decide whether I can be sufficiently confident that it had this aspect properly in mind, without having the reassurance of a clear statement that the Tribunal reminded itself of it. 54. Similarly, in relation to the burden of proof, in a decision on a section 47B claim, a Tribunal ought to refer to Section 48(2), or what it says; and indeed, without wishing to encouraging excessive or over-complicated citation of authority in this area, to show some awareness of the guidance that has emerged now from the authorities on how Section 48(2) may work in practice. Once again, there is, in this Decision, no incorrect statement of the law on this point, and so the failure of the Tribunal to direct itself about the burden is not necessarily fatal, so long as I can still discern that it did effectively consider and apply it correctly, in so far as it needed to do so. 55. In this case the Tribunal found that the Claimant had made protected disclosures, and had been subject to a large number of detriments over a period of time. Though they clearly all arose out of the same unfolding course of events, these various detriments were not, in their nature, all of a piece. Further, the Tribunal had found that the protected disclosures involved raising concerns and issues about the implications for patient safety of a new rota that had been introduced at the instigation of Mr Hodgkinson, and it had found that almost all of the detriments were by way of conduct on the part of Mr Hodgkinson, and/or of Mr Hodgkinson together with others. Possibly the only detriment, although it is not entirely clear, that was found not to have involved Mr Hodgkinson at all, was the delay in progress and completion of the investigation. 56. The Tribunal had also made the findings, in paragraph 12.6, in which they spoke of an “appalling” lack of record keeping, in paragraph 12.8, that it was “not clear” why Mr Hodgkinson and Mr Clarke thought they should meddle in the investigation, a word that is, at best for the Respondent, ambiguous as to whether it has an entirely innocent connotation, and in paragraph 12.9, about the withholding from the investigation of the evidence of Mr Sorial, the failure to review the restrictions, and the failure to review the Claimant’s sickness absence, the latter two of which the Tribunal described as “astonishing”