European dissertations can be found at the following link: DART-Europe E-theses Portal.
I have found the following dissertation which has now been added to the dissertations page:
Winder, Timothy J. "The Sacrificial Christology of Hebrews: A Jewish Christian Contribution to the Modern Debate about the Person of Christ." Ph.D. diss., Leeds University, 2005.
Update: I have a few more entries to the dissertations page. Several of these dissertations are found on EThOS which requires one register with their service, but the registration is free and so are the electronic downloads.