[2025] UKUT 365 (AAC)

Extent of disablement

Fourthly, if and to the extent that the Tribunal concludes either that the appellant is, on the balance of probabilities, suffering from Alzheimer’s as well as CTE and/or that he is otherwise suffering from degeneration that is attributable to causes other than head impacts and/or that accidents in the course of employment were only a contributing cause and not the sole effective cause of his CTE, then the Tribunal will need to apply the provisions of regulation 11 of the 1982 Regulations to decide what proportion of the appellant’s disablement is attributable to CTE (as distinct from Alzheimer’s) and, in turn, what proportion of his CTE is attributable to accidents in the course of employment (as distinct from other head impacts).

Ground 1 therefore succeeds.