Not 100% sure but doesn't NOC operate on a W from DUB anyway? It has done at times I'm sure. Most of the BHD flights are BHD a/c so that wouldn't be affected, the DUB route does have quite a lot of LGW base rotations until end of next summer, thats not saying it couldn't change. Night stopping could always be brought into play, it depends really I guess if they feel its better to use UK based crew who are paid less and have 2 LON crew bases or eliminate the associated costs by removing one of them.