I used to work over at Canary Wharf for 2 years a few years back now and had that drive every morning. I got it down to a tee and knew which lanes to be in at which time. The key is to get there for 7 or earlier otherwise youve had it. I remember when they had a diesel spillage and closed it for the day I had to use the Rotherhithe tunnel. Got to work at midday after leaving at 6:30. Its a great tunnel for sound as Jules said, Ive followed a few Ferraris through it and its awesome.
LOVE IT !!