"11 Counsel were in agreement that the appropriate procedure for us to follow in considering our decision is first of all to determine whether or not the Claimant has proved primary facts from which we could conclude that any detriment (or dismissal) was on the ground that she had made a protected disclosure or was caused by a health and safety issue. If she proves such facts, on the balance of probabilities, then the burden of proof passes to the Respondents and if they cannot prove that the detriment or dismissal were not on the ground of the protected disclosure or health and safety, the Claimant succeeds. This is the procedure adopted in discrimination cases and particularised in Igen v Wong ,[2005] IRLR 258 CA. We are aware of no authority which applies those principles to unfair constructive dismissal cases but the logic of doing so is compelling. We adopt counsel's joint submission. General considerations of fairness under Section 98(4) are irrelevant."