Also having a presence at 4 London airports is a bit OTT!
It would actually be five 'London' airports for EI if all routes are kept.
Heathrow - Dublin, Cork, Shannon, Belfast
Gatwick - Dublin, Cork, Knock
Luton - Waterford
Southend - Dublin, Waterford
London City - IOM
I'm guessing that would make them the only airline to fly to five London airports?