Low beam problem

[Ashes]

Tried seaching for this problem but drew a blank.

I have an AU3 wagon and the low beams are not working. The following happens on the various light settings
- park lights - both park bulbs are on - good so far
- low beams - only park bulbs are on
- high beams (stick pushed forward) - park, low and high beam bulbs on

I've checked the fuses, swapped them around and get the same result.
So it seems the fuses are fine, all bulbs are fine but the low beam globes dont light up.

Any ideas? I'm guessing it's switch related