"Solely… in connection with arrangements…" 58. The FTT was correct when it determined that: "medical treatment must be the sole reason for the absence" (see §24 above). Of course, a claimant is likely to engage in incidental activities while they are abroad receiving treatment (eating, sleeping, taking exercise, sight-seeing, for example), but Mr Jackson is right when he argues that in this context 'solely' means 'solely'. Judge Stout correctly observed that the use of 'solely' in the 2008 Regulations was a "tightening up" of the wording of the predecessor legislation (Social Security (Persons Abroad) Regulations 1975 ), and imposed a "stricter" test than 'absence for a specific purpose'. 59. However, there are three identifiable errors in the UT's approach to the interpretation of this part of the regulation. 60. First, it seems clear to me, as Ms Smyth has argued, that regulation 152 and regulation 153 operate independently of each other. Counsel before the UT were therefore wrong, in my view, to agree between themselves that regulation 153 only becomes relevant "after the regulation 152 exception has been exhausted" (see §43 above). Judge Stout understandably accepted that agreement, but was regrettably wrong to do so. 61. Under regulation 152, the claimant is not required to provide any reason for their absence from Great Britain for up to four weeks, and in that period they will continue to be entitled to the ESA. The regulation 152 absence abroad could therefore legitimately be for a holiday. By contrast, regulation 153 expressly stipulates that the claimant has a "sole" reason for a lengthier absence (up to 26 weeks) abroad, and that reason must be for "treatment" of a disease or bodily or mental disablement directly related to the claimant's limited capability for work. The wording of regulation 153 is clear: it specifically relates to the "the first 26 weeks of a temporary absence"