“(1) An officer of the Board may enquire into a return under section 8 or 8A of this Act if he gives notice of his intention to do so (“notice of enquiry”)— ( a ) to the person whose return it is (“the taxpayer”), ( b ) within the time allowed. (2) The time allowed is— ( a ) if the return was delivered on or before the filing date, up to the end of the period of twelve months after the day on which the return was delivered; ( b ) if the return was delivered after the filing date, up to and including the quarter day next following the first anniversary of the day on which the return was delivered;”
“(1) An enquiry under section 9A(1) of this Act is completed when an officer of the Board by notice (a “closure notice”) informs the taxpayer that he has completed his enquiries and states his conclusions. In this section “the taxpayer” means the person to whom notice of enquiry was given. (2) A closure notice must either— ( a ) state that in the officer's opinion no amendment of the return is required, or ( b ) make the amendments of the return required to give effect to his conclusions. (3) A closure notice takes effect when it is issued. (4) The taxpayer may apply to the tribunal for a direction requiring an officer of the Board to issue a closure notice within a specified period. (5) Any such application is to be subject to the relevant provisions of Part 5 of this Act (see, in particular, section 48(2)(b)). (6) The tribunal shall give the direction applied for unless …satisfied that there are reasonable grounds for not issuing a closure notice within a specified period.”
“(1) This paragraph applies if the failure … mentioned in paragraph 39(1) continues after the date on which a penalty is imposed under that paragraph in respect of the failure …. (2) The person is liable to a further penalty or penalties not exceeding£60 for each subsequent day on which the … continues.”
“(1) Liability to a penalty under paragraph 39 or 40 does not arise if the person satisfies HMRC or (on an appeal notified to the tribunal) the tribunal that there is a reasonable excuse for the failure … (2) For the purposes of this paragraph— ( a ) an insufficiency of funds is not a reasonable excuse unless attributable to events outside the person's control, ( b ) where the person relies on any other person to do anything, that is not a reasonable excuse unless the first person took reasonable care to avoid the failure or obstruction, and ( c ) where the person had a reasonable excuse for the failure or obstruction but the excuse has ceased, the person is to be treated as having continued to have the excuse if the failure is remedied, or the obstruction stops, without unreasonable delay after the excuse ceased.”