In a proper world BA would be having Heathrow's Guts For Garters if they in any way messed up services they provide (eg transit security at T5) to give anything other than a premium experience.
In fact Willie Walsh is more concerned with lining himself up to take over from O'Leary at Ryanair when the latter heads for nice early retirement, and this takes precedence over any effort on behalf of BA. The rest of the board are following his example as well. So nobody from BA says a word to Ferrovial, who continue in their merry extreme cash-saving ways to try and pay off the debt they voluntarily got into when they bought Heathrow in the first place.