"The determination of the Commissioners of an appeal under subsection (6) above shall be final and conclusive (notwithstanding any provision having effect by virtue of section 56B of this Act)."
"Penalty under the provisions ofSection 97AA(1)(a) of the Taxes Management Act 1970 in respect of your failure to comply with the notice served upon you on19th November 1999 under the provisions of section 19A(2) of that Act requiring you, on or before8th July 2000 to produce such documents as were specified in that notice."
"For the purposes of [the enquiry] the officer may at the same or any subsequent time by notice in writing require the taxpayer, within such time (which a shall not be less than 30 days) as may be specified in the notice -- (a) to produce to the officer such documents as are in the taxpayer's possession or power . . . "
"A notice [under subsection (2) or (2A)] above does not oblige the taxpayer to produce documents or furnish accounts or particulars relating to the conduct of -- (a) any pending appeal by him ..."
"An appeal may be brought against any requirement imposed by a notice under subsection (2) above to produce any document or to furnish any accounts or particulars."
"Where, on an appeal under subsection (6) above, the Commissioners confirm the notice under [subsection (2) or (2A)] above so far as relating to any requirement, the notice shall have effect in relation to that requirement as if it had specified 30 days beginning with the determination of the appeal."
"Where an Act authorises or requires any document to be served by post (whether the expression 'serve' or the expression 'give' or 'send or any other expression is used) then, unless the contrary intention appears, the service is deemed to be effected by properly addressing, pre-paying and posting a letter containing the document and, unless the contrary is proved, to have been effected at the time at which the letter would be delivered in the ordinary course of post."
"The Clerk shall send a copy of the document recording a decision in principle, and a copy of the document recording the final determination, to each party."
"Except where the final determination is given at the end of the hearing, it shall be treated as having been made on the date on which a copy of the document recording it is sent to the parties under paragraph (8) above."