EI currently DO NOT enough flight/cabin crew to operate all their flights at the peak of the summer. They cover the schedule but have cut things so close to the bone in terms of "cost rationalisation" that they cannot cover any diversions/tech delays/increased sickness levels.
Very interesting. So, what would have happened to the 300? pax from the two Sat evening cancelled flights. Unlikely to have been able to accommodate all of them on Sunday flights (unless some of them were diverted to LHR-DUB instead). Although, mind you, it strikes me that a Summer Sat evening LGW-DUB might not be a particularly busy period so maybe they were easier to cancel if the loads were lower than elsewhere.