8. The amendments to section 70 of the 1991 Act (duty of undertaker to reinstate) by section 54 of the 2004 Act (duty to notify street authority of reinstatement) shall not apply in relation to street works in respect of which notice has been given under section 54(1), 55(1) or 57 (notice of emergency works) of the 1991 Act before 1st April 2008.