Because it is the end of the Military Bridging as we know it...
"The current scheme provides for JAR-FCL licences to be granted on the basis of credit for military flying. The last day upon which the CAA will be able to grant a new JAR-FCL licence on the basis of military flying, including any of the partial credits currently available, will be 7th April 2012. The new scheme must be in place before a Part-FCL (EASA) licence may be granted on the basis of credit for military flying."