Makes no sense for Flybe to start BHD LHR, to compete with BA who huge nerwork connectivity, and Aer Lingus who are price competitive. Besides the existing carriers can feed Virgin at LHR via travel agency / tour operator bookings.
incredible that Flybe have been able to get their hands on LHR slots, if Virgin see a value in handing over slots to Flybe, it says a lot about the profitable use of shots for their existing long haul network, I would imagine a slot would be better utilised to a north American destination...