Sorry Darryl, on the Spit FR IX, a standard reflector sight was normally used (but not the Gyro sight). Somewhere I have photos where this can be seen, and a description of a sortie, but would have to search my library. However, if you look carefully at the photo of 'U' in the second PDF I posted, you can just make out the sight reflector screen and support brackets, behind the windscreen. In the side-on shot of 'D', in the first PDF, the crash pad on the sight can be seen protruding above the instrument panel.
One account I read recently, described the camera controller as being on the starboard wall, but this was a PRU Spit, Mark not known. This might be fading memory on the part of the pilot concerned, or just the way it was written, as he describes "reaching over to the right of the cockpit to switch on the cameras" etc.