(1) This section applies in a case where—

(a) notice of appeal may be given to HMRC under section 222, but

(b) no notice is given before the relevant time limit.

(2) Notice may be given after the relevant time limit if—

(a) HMRC agree, or

(b) where HMRC do not agree, the tribunal gives permission.

(3) If the following conditions are met, HMRC shall agree to notice being given after the relevant time limit.

(4) Condition A is that the appellant has made a request in writing to HMRC to agree to the notice being given.

(5) Condition B is that HMRC are satisfied that there was reasonable excuse for not giving the notice before the relevant time limit.

(6) Condition C is that HMRC are satisfied that request under subsection (4) was made without unreasonable delay after the reasonable excuse ceased.

(7) If a request of the kind referred to in subsection (4) is made, HMRC must notify the appellant whether or not HMRC agree to the appellant giving notice of appeal after the relevant time limit.

(8) In this section “relevant time limit”, in relation to notice of appeal, means the time before which the notice is to be given (but for this section).