Nohold
Dunno about empty ferry flights, BRU airport website shows...
I honestly have no idea what the status of the BRU but BA did announce (at 1645 BST) that all passenger services ex LHR and LGW were cancelled, I don't think there's going to be any attempt to resurrect normal service ex London until the AM. I do know that at least some Longhaul services are most definitely departing empty for positioning purposes tonight -some have already left. I suspect similar might be done with some of the Shorthaul fleet.