We'll be driving from Dover to Cambridge. The last time we did this we got stuck in the longest traffic jam I can remember. I had to phone our B&B and ask them not to give up our room. Is there any way around this? Other than going all the way around London, which I don't think will save any time? The Tilbury - Gravesend ferry seems to be for foot passengers only, from what I can see on my map. I'm hoping that it was so bad the last time because it was Easter weekend and won't be quite so bad this time. Does anybody have any tips? Thanks in advance.