Can a party ta an arbitration produce evidence or information from a criminal action? This can be a key issue: information and evidence from a criminal file can amount ta decisive proof in an arbitrotion. However whilst the merit of arbitral justice is, in principle, ta have the most evidence and information available ta get ta the truth by guaronteeing each party’s “right ta evidence”, that of criminal justice can be ta preserve the secrecy of personal and security data obtained, bath in arder ta maintain procedurol serenity and efficiency, and ta protect the fundamental rights of the persans implicated. The difficult combination of these conflicting interests explains the uncertain legal regime for the communication of criminal evidence in civil proceedings. Some principles nevertheless seem ta emerge: firstly, documents must have been obtained legal/y, either by being a party ta the criminal action, or by having sought these from the prosecution; thereafter, cammunication ta third parties is, in principle, prohibited by virtue of the rules pratecting procedural and professional secrecy, however it can be justified ta the strict extent required ta allow a party ta defend itself.