I had a long connection in LHR the other day and realized that there is no T1 lounge for OW Emeralds if going to Ireland.....I flew AA in and was connecting to DUB on EI (original had me avoiding LHR, but weather forced change by AA)....went to BA Terraces only to be told that since I was continuing on EI, I could not come in.......tried EI (even though they are not in OW anymore) and told that it was too bad.....I had AA ticket and flt nbr, but on EI metal.....could not come in.......this was not good......LHR is bad enough even with access to a lounge for a 4 hour wait......but without one, it was really bad. Any suggestions about how to get into lounges on future LHR connections to IRL with OW?