“5. I agree that in this case the First-tier Tribunal appear to accept that there was an element of dual causation of disablement and in this regard they should have indicated that they then went on to consider whether Reg 11 of theSocial Security (General Benefits) Regulations 1982 applied. However, in terms of dual causation, I submit that Reg 11(2) provides: “When the extent of disablement is being assessed for the purposes of section [103 of theSocial Security Contributions and Benefits Act 1992 ], any disabilities which, though resulting from the relevant loss of faculty, also result, or without the relevant accident might have been expected to result, from a cause other than the relevant accident (hereafter in this regulation referred to as “the other effective PA v Secretary of State for Work and Pensions (II)[2021] UKUT 257 (AAC) 5 cause”) shall only be taken into account subject to and in accordance with the following provisions of this regulation.”
“(4) Subject to paragraphs (5A) and (5B) any assessment of the extent of disablement made by reference to any disability to which paragraph (2) applies, in a case where the other effective cause is an injury or disease received or contracted after and not directly attributable to the relevant accident, shall take account of all such disablement to the extent to which the claimant would have been subject thereto during the period taken into account by the assessment if that other effective cause had not arisen and where, in any such case, the extent of a disablement would be assessed at not less than 11 per cent. if that other effective cause had not arisen, the assessment shall also take account of any disablement to which the claimant may be subject as a result of that other effective cause except to the extent to which he would have been subject thereto if the relevant accident had not occurred.”