Stoped at Lincoln to see the Cathedral and the Castle. The Cathedral was huge, but kind of depressing on the inside (not that Cathedrals are normally happy places, but this one was particularly sobering). Fantastic stained glass. The castle was nice, but really only had two features. The observatory tower from which there is a fantastic view of the cathedral. And the prison, which displays one of the four remaining original drafts of the Magna Carta. I wanted to see the Magna Carta since it is the forerunner of most modern constitutions. i did however find it somewhat disapointing. It's not decrative at all, just a old piece of paper with very small writting in latin.
The next, and final stop was Cambridge. I spent most of my time in Cambrisge wandering around Trinity college (it was the first one I happened to wander into). Getting back to the bus I got hopelessly lost and spent about an hour franticly trying to figure where the hell I was. I finally managed to flag down the bus as it was going to find a phone to call the polce station... Cambridge is definitely on my list of places to spend more time.
Horrible traffic coming into London, but we made it. Unexciting night at the pub, got my email, and went to bed.
Over all I think the bus tour was a good thing. It's definitely not my normal mode of travel though. I saw a lot of things and places that I wouldn't have known to go to, and it was nice not having to worry about what / where next for a bit. However, I feel like I've seen most of Great Brittan as a series of snapshots with nothing inbetween. 30 minutes or an hour really isn't enough time at most of these places, and others was way to much. I really want to go back to Edinburgh, The Lakes District, and Cambridge.