Originally Posted by
corporate-wage-slave
you can't ping SEN's delays on BACF
I disagree - the delay is timed on the time it takes you to get to your original destination, and if your intermediate airport takes longer to get out of than LCY then it's going to be included. BA regarding all LON airports as the same is not just 'dodgy' but totally wrong, and wouldn't stand up.
I'd suggest that your claim is that the arranged transport would get you to your destination airport 3 hours+ late.