This paper aims to compare the provisions regarding the integrity of the procurement procedure of Community law with regard to the current regime provided for in the Consolidated Law on Public Procurement, approved by Royal Legislative Decree 3/2011, of 14 November (TRLCSP), and certain provisions related to transparency and good governance being developed. It also aims to address the regulatory implications of the measures of the new public procurement Directives regarding transparency and corruption control, especially in relation to conflict of interest and illegal activities in this area. This will also probably help to refine the causes of incompatibility, prohibitions on contracting and illegal conduct in the procurement procedure laid down in Spanish law.