Aer Lingus published 4 Daily BHD/LGW for S13 but given the state of forward load factors (even with heavy discounting ) ,later announced the 4th freq would terminate on 28Apr13'with the LGW slot /aircraft resource used to add an xtra LGW/DUB freq .So the 4 frequencies operated for just abt 1 month this summer.
Even with the reduced frequency ,fares/yields continued very low during the rest of the season and probably affected LHR as well with the offers diverting traffic from there.
For S14 ,I imagine their strategy is to use the reduction of capacity ,resulting from BE withdrawal ,to improve yields, load factors ,revenues on both BHD/LGW and BHD/LHR.