Article 21U.K.
1.Any action contesting the claim or the instrument permitting its enforcement which is taken in the Member State of the applicant authority shall be notified to the requested authority by the applicant authority immediately after the applicant authority has been informed of such action.
2.If the laws, regulations and administrative practices in force in the requested Member State do not permit precautionary measures or the recovery requested under the second and third subparagraphs of Article 14(4) of Directive 2010/24/EU, the requested authority shall notify the applicant authority thereof as soon as possible and in any event within 1 month of the receipt of the notification referred to in paragraph 1.
3.The requested authority shall notify any action taken in the requested Member State for reimbursement of sums recovered or for compensation in relation to recovery of contested claims under the third subparagraph of Article 14(4) of Directive 2010/24/EU to the applicant authority immediately after the requested authority has been informed of such action.
The requested authority shall as far as possible involve the applicant authority in the procedures for settling the amount to be reimbursed and the compensation due. Upon a reasoned request from the requested authority, the applicant authority shall transfer the sums reimbursed and the compensation paid within 2 months of the receipt of that request.