Waiting for figures is not the crews problem they have no choice, it is BA's they need to be told to stop the procedure.(sometimes you expect the cabin secure & it doesn't come say due a pax suddenly standing up, communicating the like takes time) As for ATC hassle, well wonder how the controller would have felt should the birdseed have taken off with say wrong flap set and crashed with loss of life etc. I'm sure the AAIB would have sited the hassle as a factor. Sometimes you just have to "suck it up" and shrug as hassling crew just prior to departure is a recipe for mistakes to be made.
