http://www.legislation.gov.uk/id/eut//teec

PART SIXINSTITUTIONAL AND FINANCIAL PROVISIONS

TITLE IIIENHANCED COOPERATION

Article 327(ex Articles 27a to 27e, 40 to 40b and 43 to 45 TEU and ex Articles 11 and 11a TEC)

Any enhanced cooperation shall respect the competences, rights and obligations of those Member States which do not participate in it. Those Member States shall not impede its implementation by the participating Member States.