“ If the United Kingdom does not move to the third stage, it may change its notification at any time after the beginning of that stage. In that event:
(a) The United Kingdom shall have the right to move to the third stage provided only that it satisfies the necessary conditions. The Council, acting at the request of the United Kingdom and under the conditions and in accordance with the procedure laid down in Article 109k (2) of this Treaty, shall decide whether it fulfils the necessary conditions. ”

“ The Bank of England shall pay up its subscription to the capital of the ECB as a contribution to its operational costs on the same basis as national central banks of Member States with a derogation.
10. ”