Presumably there is still some demand, albeit much-reduced, for BHD/LHR travel.
What are the criteria for being able to travel on a domestic route like this at this time?
Presumably there might be some essential scientific/medical travellers, but my understanding is that although one can travel to non-essential work (if you can't work from home), you must comply with social distancing. Is such distancing being achieved in terminals and on board?