This symposium has been organised in order to build on the fruitful interactions between the twistor, string and perturbative scattering amplitude communities that emerged after Witten's introduction of Twistor-String theory in 2003. The meeting will bring together recent developments in all three areas, from recent work in both twistor-string and super-string theory to the remarkable recent developments in scattering amplitudes both for super-gravity and for use in collider physics.