In section 284(2) of the 1995 Act (no entitlement to challenge sufficiency of evidence in certificate relating to certain physical data), for the words “such other party shall not be entitled to challenge the sufficiency of the evidence contained within the certificate” there is substituted “, if that other party serves on the first party, not more than seven days after the date of service of the copy on him, a notice that he does not accept the evidence contained in the certificate, subsection (1) above shall not apply in relation to that evidence.”.