Can you call your GP and discuss over the phone and get im / her to print out the referal and leave it at the desk to be picked up?? Thats what my GP does for me...
I don't actually have a GP that I see down here, I get in with whoever I can at the medical centre that my GP used to be at before she pi$$ed off up north. I can't get into any other centre in town at all. So I doubt I would get that done!

Berrme - I don't think so, although its a nice thought to splash out $270 just to find out the sex!