Just to remind people that seem to think that the clip was edited to BA's disfavour, almost 4 minutes elapsed from the time of his first "standby" to when he was actually ready to take off (04:00 to 07:43). 4 minutes! I can't see any airline getting away with that at LHR, LGW, MAN, etc.
Unfortunately the LiveATC feed at DUB scans three frequencies, so that's the reason why some of this conversation was missed. Listen to the whole unedited clip and you will hear.