Well, that's what I thought Boydy, but the dim-dip circuit at the bottom left page 13.20 shows the inhibitor relay cutting power to both dip and main beam?
If that's right (and it's there in black and white) then the fogs should not come on at all if either dip or main is used. But, that's seems stupid, so either Haynes is wrong or Dez has miswired it.
I'd reckon on the culprit being Haynes.
So Dez, this seems to be how it's meant to work. If you don't like it, you could disconnect the fog light inhibitor, which is a relay with blue and brown wires to it. Find it by switching on the lights and fogs, then switching from main to dip you should hear it clicking.
Disconnect the blue wire from it.
Now, your Hazards. This seems a bit odd.
Have got 12 volts at the end of the purple wire connecting to the switch?
If no, check the fuse.
It seems that the Hazard switch is fed 12v twice. First time by purple permanently, secondly by green, which is ignition switched.