Update - UK-Algeria talks on deportation of terror suspects

My speculations were correct, and sooner than I had expected. In addition to the extradition treaty, they signed agreements on legal co-operation and movement of people. Few details are available yet (APS is uninformative).

Update: It looks like "Business in Africa" jumped the gun. According to Liberte, they didn't sign the agreement, they just agreed to it - the signing will take place in London, and Bouteflika will personally go there to sign it.