where can I get instructions for a cannon camberley oven?

I have no instructions for the cannon camberly gas cooker I bought on E-bay, and can't work out how to use the clock/timer. I can't set the time of day, but it does still function in that it will turn off the oven after a set time. Now that I have used the timer, I can't get the oven to light at all! If anyone could let me have a copy of their instructions, I would be very grateful.
It's a cannon camberley double oven, glass lid. Timer on the right of the control panel, 5 buttons, "minute minder", "cook period", "end time", "-", and "+". Thank you.