Heading for Hamburg

Flying out this afternoon to Hamburg where I'm scheduled to give a brief presentation tomorrow morning. Was a bit later leaving the house than I'd planned, and then had wait for over 15 mins for the bus. Now I can only hope Heathrow terminal 2 is fairly quiet outbound, else I'm going to struggle to catch the flight, and I really don't want to spend the next 50 mins with my heart in my mouth!