"In a case where an employee is dismissed because the employer suspects or believes that he or she has committed an act of misconduct, in determining whether that dismissal is unfair an Industrial Tribunal has to decide whether the employer who discharged the employee on the ground of the misconduct in question entertained a reasonable suspicion amounting to a belief in the guilt of the employee of that misconduct at that time. This involves three elements. First, there must be established by the employer the fact of that belief; that the employer did believe it. Second, it must be shown that the employer had in his mind reasonable grounds upon which to sustain that belief, And, third, the employer at the stage at which he formed that belief on those grounds, must have carried out as much investigation into the matter as was reasonable in all the circumstances of the case. An employer who discharges the onus of demonstrating these three matters must not be examined further. It is not necessary that the Industrial Tribunal itself would have shared the same view in those circumstances. Nor should the Tribunal examine the quality or material which the employer had before him, for instance to see whether it was the sort of material which, objectively considered, would lead to a certain conclusion on the balance of probabilities, or whether it was a sort material which would lead to the same conclusion beyond reasonable doubt."
"The Tribunal had to consider the relevance of the undisclosed statements. The statements are central to the issues to be decided by the Tribunal. It was evidence upon which the respondents relied to dismiss the three applicants. It was the evidence contained in the statements which led to the dismissals. Without information from the statements the applicants could not show that the evidence was unreliable, inadequate or contradictory or that further enquiries should have been made. It may be that any of those considerations did not arise, but, without seeing the statements the applicants could not decide whether that was an avenue for them to explore. It went to the substantiality of the dismissal. He said that there had to be a recognised ground for refusing the disclosure, and he referred to Science Research council -v- Nassé in which he indicated that Lord Wilberforce had said that the ultimate test is whether discovery is necessary for disposing fairly of proceedings, if it is, then if it is necessary that disclosure must be ordered notwithstanding confidentiality. He also referred the Tribunal to Article 6 of the Human Rights Convention and that the applicants were entitled to a fair trial and to proper disclosure of information. Both Counsel referred the Tribunal to Linfood Cash and Carry Ltd –v Thompson[1989] IRLR 235 , Science Research Council -v- Nassé (which I have already referred) B L Cars Ltd (formerly Leyland Cars –v- Vyas [1979] 3A11ER673. Mr Squires referred the Tribunal to Sunday Times –v- UK[1979] 2EHRR245 and D –v- NSPCC[1978] AC 171 and R -v- H and W. "
"11 Our decision is an unanimous decision. We take as our starting point the Science Research Council case. The head note states an Employment Tribunal, "should not order discovery unless it was necessary either for disposing fairly of the proceeding or for saving costs, and when exercising that discretion in relation to confidential documents it should be in the interest of justice to have regard to (a) the fact that the documents were confidential and that to order disclosure would involve a breach of confidence and (b) the extent to which the interested third parties would be affected by the disclosure"
"The issue is did the employer upon the facts and circumstances reasonably accepted by him at the relevant time which imports the notion that there has been sufficient investigation, act fairly and reach a reasonable and reasoned decision on the evidence"."