Persons not to work on specified premises unless a fire certificate is in force

11	(1)	Subject to paragraph (2) of this Regulation a responsible person shall not work or permit any other person to work on any premises for which a fire certificate is required unless such a certificate is in force and the conditions attached to it are being complied with or an application has been made for a certificate and it has not been refused or withdrawn.
	(2)	Paragraph (1) of this Regulation shall not apply where the work is solely for the purpose of-
		(a)	taking any steps required under Regulation 4(4), 6(4), 7(4), or 8;
		(b)	complying with a condition imposed under Regulation 5(2); or
		(c)	otherwise making the premises safe.