Dr. Polychronis P. Tsiridis is, exclusively, practising criminal law, being registered - since 1976 - with the Piraeus Bar Association. In 1995 he received the award of Doctor Iuris (with Distinction) from the Law School of the University of Athens for successfully defending his thesis on ‘Bankruptcy Crimes’ and Visiting Professor at European University of Cyprus. He lectures in Criminal Law and Procedure at the Piraeus Bar Association Trainee Lawyers’ Seminars, as well as at the Athens Bar Association Young Lawyers Seminars.

He has served as a Vice – President of the Hellenic Criminal Bar Association and is currently a Board Member of said. He has also participated in several congresses both in Greece and abroad. Moreover, he has represented the Ministry of Justice in an international level and he is active as a member of legislative Committees set for the drafting of criminal law legislation. Furthermore, he serves as a permanent member of the Central Legislative Committee of the Ministry of Justice. He is the author of numerous articles and of seven books, namely:

1.“Bankruptcy Crimes”, Athens 1995
2.“Criminal Juristiction over crimes committed on board vessels”, Athens 1998
3. “Criminal Legal Studies”, Athens 2001
4. “International Conventions”, Athens 2004 (as a co-editor along with Ilias Anagnostopoulos and Nicolaos Livos)
5. “The new Legislation for the speeding-up of the Criminal Trial”, Athens 2005     
6. “The New Money laundering legislation”, Athens 2009
7. “Criminal Risks for the Legal profession”, Athens 2019.