They are being a bit more specific about full year op profit growth (low double digit %). This implies a further small c5% downgrade, and disruption (strikes) seems a more prominent reason alongside Brexit/uncertainty.
Presentation here:
http://www.iagshares.com/phoenix.zht...-presentations
Guiding to 4.5% FY capacity growth instead of 4.9% (though BA least affected 2.6% vs 2.7%).