on the Bimmernav site there is this line
"If you can not find this plug, it is possible your car was not prewired for voice recognition (Some Euro)"

It looks like mine is one of them. Unless I have gone completely blind (and I also got someone else to look because of this possibility) there is no spare connector behind the whole of the cd nav area? The only possibility is that it has been tucked out of the way behind the boot side panel. I do have a lot of boxes in that area and perhaps when installing they did something with my connector.

John