I am a fixed term Lecturer in the Department of Philosophy of the University of Stirling.  Before taking up this position I was a Jacobsen Research Fellow in Philosophy at the London School of Economics and the University of London Institute of Philosophy.  My research interests include the history of early analytic philosophy, the philosophy of logic and language, metaphysics and the philosophy of the later Wittgenstein.  The following link to some recent papers of mine:

Tractarian Objects and Logical Categories (Synthese (2009) 161: 145-161 (published version))

Symbols in Wittgenstein's Tractatus (European Journal of Philosophy (2007) 15(3): 367-394 (published version))

Email: colin.johnston_at_stir.ac.uk