Well I'd imagine they would want to keep prices relatively competitive for connections, otherwise Irish pax will just go through FRA/CDG etc, or TY/EK/The unmentionable if heading that direction, and as for point to point, BE are pretty cheap out of LCY, then there's FR out of LGW,LTN and STN, Stobart in SEN. It's different now from the old airline cartel days, in that BA and EI are now only 2 of 6 airlines serving the 2 cities