http://www.legislation.gov.uk/eur/2017/1939/article/29Council Regulation (EU) 2017/1939 of 12 October 2017 implementing enhanced cooperation on the establishment of the European Public Prosecutor’s Office (‘the EPPO’)Council Regulation (EU) 2017/1939Council Regulation (EU) 2017/1939 of 12 October 2017 implementing enhanced cooperation on the establishment of the European Public Prosecutor’s Office (‘the EPPO’)2020-12-12King's Printer of Acts of Parliamenthttps://webarchive.nationalarchives.gov.uk/eu-exit/https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32017R1939texttext/xmlen2017-10-12CHAPTER VRULES OF PROCEDURE ON INVESTIGATIONS, INVESTIGATION MEASURES, PROSECUTION AND ALTERNATIVES TO PROSECUTION
SECTION 1 Rules on investigations
Article 29Lifting privileges or immunities1.

Where the investigations of the EPPO involve persons protected by a privilege or immunity under national law, and such privilege or immunity presents an obstacle to a specific investigation being conducted, the European Chief Prosecutor shall make a reasoned written request for its lifting in accordance with the procedures laid down by that national law.

2.

Where the investigations of the EPPO involve persons protected by privileges or immunities under the Union law, in particular the Protocol on the privileges and immunities of the European Union, and such privilege or immunity presents an obstacle to a specific investigation being conducted, the European Chief Prosecutor shall make a reasoned written request for its lifting in accordance with the procedures laid down by Union law.