4.—(1) Subject to rules 5 and 6, the Board shall, within 21 days of receiving the notice of appeal send the following documents to the Employment Tribunal Office —
(a)one copy of the notice of appeal;
(b)a copy of the assessment notice and of any notice by the Board allowing further time for appealing;
(c)a notice giving the Board’s address for service under these rules where that address is different from the address specified in the assessment notice as the address for service of a notice of appeal; and
(d)any representations in writing relating to the appeal that the Board wishes to submit to the tribunal.
(2) Failure to comply with any provision of this rule or rule 5 shall not make the appeal invalid.