“The purpose of the statutory scheme is to assist HMRC at the investigatory stage to obtain documents and information without providing an opportunity for those involved in potentially fraudulent or otherwise unlawful arrangements to delay or frustrate the investigation by lengthy or complex adversarial proceedings or otherwise.” 55. It is clear from the reference to “the statutory scheme” that the Chancellor is here referring to Sch 36 as a whole, and not simply to the third party notices with which the case was directly concerned. 56. In Kotton v HMRC[2019] EWHC 1327 (Admin) (“Kotton”), Simler J (as she then was) in the context of an appeal against Notices issued to a third party under paras 2 and 3 of Sch 36, said at [60]: “the question for the HMRC officer (and therefore the FTT judge) is an expressly limited one: the officer must be satisfied that the information or documents to be sought by a third party notice are ‘reasonably required’ for the purpose of ‘checking’ the tax position of the taxpayer.” 57. This limited role was, she said, “unsurprising” given that Sch 36 is “directed at an early investigatory stage and in any investigation some lines of enquiry may prove more fruitful than others”