health protection agency act 2004 health protection agency act 2004 the health protection agency act 2004 (c 17) is an act of the parliament of the united kingdom. health protection agency act 2004parliament of the united kingdomlong titlean act to establish the health protection agency and make provision as to its functions.citation2004 c 17datesroyal assent22 july 2004other legislationrepealed byhealth and social care act 2012status: repealedtext of statute as originally enactedrevised text of statute as amended section 1 – health protection agency section 1 (1) provides that there is a body corporate known as the health protection agency, or, in welsh, yr asiantaeth diogelu iechyd. section 2a – functions in relation to biological substances this section was inserted on 1 april 2009 by section 159(3) of the health and social care act 2008. section 12 – commencement the health protection agency act 2004 (commencement) order 2005 (s.i. 2005/121 (c. 5)) was made under this section. section 12(3) provides that paragraph 3 of schedule 3 came into force at the end of the period of two months that began on the date on which the act was passed. the word "months" means calendar months. the day (that is to say, 22 july 2004) on which the act was passed (that is to say, received royal assent) is included in the period of two months. this means that the paragraph came into force on 22 september 2004.