Flame
The LGW service is a BA codeshare. BA must like it that way because EI doesn't operate to LGW from anywhere else and it would be probably cheaper to let BA do it than maintain staff etc. at LGW for a single destination. Similarly watch for BA taking over the DUB-LCY when they start RJs there and EI let their's go.
Dunno what IB think about the Spanish routes.