"(2) The period within which an appeal to the Appeal Tribunal may be instituted is 42 days from the date on which extended written reasons for the decision or order of the employment tribunal were sent to the appellant …"
"(2) Every interlocutory application other than an application for a restricted reporting order shall be disposed of by the Registrar except that any matter which he thinks should properly be decided by the President or a judge shall be referred by him to the President or a judge, who may dispose of it himself or refer it in whole or in part to the Appeal Tribunal as required to be constituted by paragraph 16(1) and (2) of Schedule 11(a) or refer it back to the Registrar with such directions as he thinks fit."
"(2) … If the explanation satisfies the tribunal that there is a good excuse for the default, an extension of time may be granted. … (3) If an explanation for the delay is offered, other factors may come into play in the exercise of the discretion. …"
"Parties who have decided to appeal are also strongly advised not to leave service of the notice of appeal until the last few days of the 42-day period."
"… The tribunal will look at the length of the delay which has occurred, though it may refuse to grant an extension even where the delay is very short. Extensions have been refused, even where notice of appeal was served only one day out of time. …"