It seems that their strategy is to do it on a case by case basis.it has a government aviation strategy
Easyjet were granted a loan. Virgin were told to resubmit.
I'd be very surprised if they didn't help Loganair. Firstly it's an important airline for intra Scottish connectivity to the highlands and islands. Secondly I don't think politically they can let Scotland's airline fall as it would become part of the argument for independence, nor do I think that they can let the Scottish government take the lead on any help again due to the Independence debate.
The problem will be for airlines like Eastern and Blue islands is would they be considered vital by the UK government in any way?