“1. The grounds of appeal are, in part at least, arguable. I give permission to appeal with some misgivings, as questions of credibility are fundamentally matters of fact for the First-tier Tribunal to determine. The tribunal in the present case explained why it was unable to place great weight on the appellant’s evidence and I cannot interfere with that judgement unless the tribunal misdirected itself in law in some way. It is certainly not the task of the Upper Tribunal to tell the First-tier Tribunal how to weigh and evaluate the evidence or whom to believe. 2. I also acknowledge that the First-tier Tribunal has taken considerable care over its decision, which in many ways is detailed and comprehensive. I acknowledge also the point made by the Regional Tribunal Judge when refusing permission at first instance, namely that a tribunal’s Statement of Reasons cannot be read with the exactitude of a contract and need not cover every single point raised by the case. 3. I recognise furthermore that there are aspects of the case which, on any reading, appear to do the appellant little credit. On the face of it he appears to have been less than frank in either (i) his disability living allowance claim forms or (ii) his application for a PSA licence and in his job applications, or possibly both at different times. 4. However, having considered the various points made by the appellant’s representative, and having considered the full file before the First-tier Tribunal, I have concluded that the grounds of appeal are arguable in certain respects. This does not mean that I think it is certain that the appellant would succeed on an appeal to the Upper Tribunal – just that he has an arguable case that the First-tier Tribunal may have erred in law. 5. The points made by the appellant’s representative about the tribunal’s reasons for the supersession, disentitlement and overpayment aspects of the decision may have some merit. In particular, are the tribunal’s reasons adequate as regards (a) supersession for the whole of the period from14 January 2003 and also (b) as to the recoverability of the overpayment? 6. As regards (a), the supersession and disentitlement decision, the Secretary of State had known in August 2000 that the appellant had been driving a bus full-time for some 18 months from August 1998 to March 2000 (see doc 91). Of course, being in full-time work is not a bar to receipt of disability living allowance, but the nature of the work may have a bearing on whether the conditions of entitlement are met. Furthermore, the Secretary of State had done nothing at that stage in 2000 either to withdraw the appellant’s award of the higher rate of the mobility component or to seek recovery of any overpayment for the past period when he had been working. Clearly the subsequent decision was based on the assessment that his walking had improved, not that he was driving a bus. However, the improvement in walking ability on which the Secretary of State now relies was based entirely on evidence as to how far the appellant could walk to get to and from the bus which he was driving which, had the matter been investigated in 2000, might have been the same. Moreover the EMP in 2000 expressed the view that “in my opinion client can walk 100 metres on the flat, without stopping” (doc 154), a statement of opinion which surely would cast some doubt on an award of higher rate mobility, yet the Secretary of State’s subsequent 2001 supersession decision only affected the care component, and not the mobility component (doc 168). 7. As regards (b), the recoverability of the overpayment, the tribunal does not appear to have made specific findings with regard to the overpayment decision (as opposed to the supersession and disentitlement decisions). However, reading the Statement of Reasons as a whole, and bearing in mind the Regional Tribunal Judge’s well-made points, it seems reasonably clear that the tribunal came to the conclusion that the appellant had not reported that his mobility needs had decreased. Certainly the Secretary of State’s original decision was based on an alleged failure by the appellant to disclose a change of circumstances (see doc 289) with effect from14 January 2003 . 8. Put simply, however, and as referred to above, the Secretary of State knew in 2000 that the appellant had been working full-time as a bus driver and it had apparently not affected his entitlement to higher rate mobility. Is there evidence that there was anything else to make the appellant think that it might affect his entitlement to benefit in 2003?”