UKSF and 1 Para (UKSF support) are already out in Luqa. I expect that they will wait until there is clear and direct danger to UK oilfield workers before taking action - politically it would be very difficult to deploy otherwise. I'd expect that there are a few guys on the ground out there already. It is still possible to fly in civilian aircraft - I went down to Sabha a few days ago - so they could get in discreetly.