Xenon bulb loose in holder

[Shel]

Hi guys. Since buying the x5 (facelift with xenon bulbs) the drivers side has had an extremely poor spread of light.

I've checked the level sensors on the arms of the car and parked infront of a reflective window and can confirm the auto level system is working when I turn on the ignition.

Upon opening the back plastic cover the xenon bulb fell out!
Tried to get it back in, it sits in place but there is absolutely nothing there to hold it in place. I've tried a slight twist but it only seems to go in one way.

I haven't investigated the other side yet.

I have trawled the net in search of retaining clips/springs with no luck. Can anyone point me in the right direction? Is it possible to utilise the bulb holder from the halogen bulb temporarily?