I can still remember my first meeting with Jon at a King's College Spatial Representation Psychology-Philosophy Seminar in the early 90's. He told me he was thinking of applying for a lectureship in the Department (where I was based) and was making an "informal" visit to see the lie of the land. We discussed our mutual interests in Neuropsychology and Spatial cognition and I was really excited at the prospect of gaining a colleague who was also a potential collaborator. Jon joined the Department . We subsequently exchanged lots of ideas, spent some enjoyable mornings working with patients and then, all too soon, Jon was off to London. My memories of the short time we worked together are very fond ones tinged with much regret that circumstances intervened to cut the collaboration short. I sometimes wondered whether we would ever work together again but tragically, that is not to be.
I would like to extend my condolences to Jon's family at this desperately sad time.