Many thanks all for your replies. BA to Denver, club (thank you BA miles). Always on line check in and fast bag drop but as you say, this can be a lengthy one. It was the security delays that concerned me especially after reading all the comments from those who have had frustrating and a real buggerance factor from the jobsworths.
I'm one of these people that must get to an airport with heaps of time to spare and get into a mild panic when boarding time gets too close!
Good advice and thank you.
Paxboy, I'll lket you know.