Question to the Cabinet Office:

To ask His Majesty's Government whether a matter vetoed under the operation of the Stormont Brake and not subsequently agreed by the UK–EU Joint Committee may be brought to international arbitration; and whether the UK has committed to accepting such a decision as final.

It is correct to note that the Stormont Brake safeguard is not subject to any ECJ oversight, and any dispute on this issue would be resolved through subsequent independent arbitration according to international, not EU, law.