The UK has written to the Hungarian Presidency and European Commission, confirming its intention to opt in to the revised Brussels I Regulation (see our focus group on the Green Paper and Report) and participate in the negotiations. The relevant Ministerial Statements were made in the Houses of Commons and Lords on 5th April 2011. You can also read the general debate that was had in the House of Commons by the European Committee. Unsurprising news, perhaps, but news all the same.
[Many thanks to Jean McMahon at the Ministry of Justice.]