We cannot decide what would be better, we have only 7 hours. Should we stay in Dover and check out the cliffs and castles or travel to London and parttake in all the touristy things there? I know the trip is about 2 hours from Dover to London which would mean we would only have about 3 hours in the city to sight see before we have to head back. And that may be cutting it close. All opinions are very much appreciated!!!