Managing Multiple Services - realworld experiences plz

My company has recently began developing it's next generation platform (aptly named Picard) using a Services Oriented Architecture. For what it's worth all the services use REST. Currently I am managing each service as it's own project. To add some context, in SVN there is a QA folder for each application under Trunk. While this is a great model for organization, I'm starting to see some limitations in integration tests between services. For example if service-A and service-B are integrated and work together I cannot figure out a way to simulate this using separate projects. In my limited experience both services needed to exist under a single Project.

How have other people handles similar situations? I'd like to get a solid foundation before our SoapUI library grows to a point where changing our ways becomes very painful.

Thanks in advance and I look forward to becoming an active member of this forum.