Fully-funded PhD studentships are available in the Department of Computing and Communications, The Open University (OU) UK
The details are available here: http://www.jobs.ac.uk/job/ANH409/two-studentships-in-computing-and-communications/
These are the projects that I have proposed along with colleagues in my department and in OU's Knowledge Media Institute:
Developing geographical understanding through 3D immersive environments
How can technology enhance fieldwork learning