The Union and the United Kingdom shall, in full mutual respect and good faith, assist each other in carrying out tasks which flow from this Agreement.

They shall take all appropriate measures, whether general or particular, to ensure fulfilment of the obligations arising from this Agreement and shall refrain from any measures which could jeopardise the attainment of the objectives of this Agreement.

This Article is without prejudice to the application of Union law pursuant to this Agreement, in particular the principle of sincere cooperation.