Ceased partnership - partner walked away

Two partners (50:50) have been trading as a partnership form April 2010 - they were making loses. Accounts 2010/11 are done. In May 2012 one of the partners left a note to the other partner that he is leaving the partnership and never appeard again. Took all his stuff at night. Accounts up to the end on March 2012 must be done and then for period April - May 2012. Who signs the accouts? The partner who was left? Thank you