PPP is a form of cooperation between public authorities and private actors in such sectors as transport, public health, education, national security, waste management, and water and energy distribution. PPP is rapidly expanding, thus imposing strict requirements on the public entity and enhancing protection of private actors concerned. As a result, public entities need specific knowledge and experience in order to conduct fair and transparent procurement procedure that complies not only with national laws, but also with the requirements of European Union law. On their part private actors need professional legal assistance tailored specifically to their circumstances in order to ensure effective protection of their interests in the course of cooperation with public authorities.