I’m not 100% convinced UA, AA and TS pulling out was because of Primera - TS was already on life support, AA had drastically cut their JFK hub and continue to do so while UA had started cutting their regional U.K. routes. BHX might took a gamble on Primera knowing that these airlines were already on their way out and felt they had nothing to loose. It’s just a shame Icelandair pulled out the same time as I feel they were the ones to probably lose out. I don’t think it’s a coincidence these airlines went after a TCX launched transatlantic flights up the M6 offering cheaper fares and a better product than what UA and AA were.
Indian Sub Continent......two way traffic.