Classic Headlight issues on '92 Classic Hard dash

Hi, on my '92 Dec reg, I have been doing her up and found I have not dipped headlights on either side. I have checked the main light switch, and the high low beam switch is putting out power on both high and low positions but I am getting no power at the fuse box on the dip/low beams. Are there any other relays or junction boxes that I should be hunting down? If I had hair I would have pulled it out by now!

You could do with a manual or wiring diagram to at least to trace the wires direction through the car and that should reveal something on the circuit..