It will be unfortunate if AB do pull the BHD/STN however one would imagine FR will step in fairly quickly to take the route over hopefully with better timings than AB. AB's timings are hampered by them not having any based a/c at STN and the operating a/c has to position into STN from Germany and then on to BHD. As a result the morning flight is too late and the evening flight too early.
If FR pick up STN they are likely to announce other routes from BHD at the same time possibly BRS and LTN and perhaps a European destination.