I've just got some more detailed exam results from Kings. I've passed all 8 exams on my first attempt, and got a >70% average, so that puts me on course for the Distinction. It's now just dependent on how well my project goes.
Algorithm Design and Analysis: 67%
Algorithmic Graph Theory: 82%
Cryptography and Information Security: 73%
Data Structures and their Implementation: 100%
Parallel and Distributed Algorithms: 72%
Randomised Algorithms: 62%
Text Searching and Processing: 70%
Advanced Research Topics: 60%
So, some were better than expected, and some were worse. I was only expecting to scrape a pass on Randomised Algorithms (about 50%), so 62% was better than expected. On the other hand, I thought I'd got about 97% on Graph Theory, so that's a bit lower (but still a decent mark). Anyway, I got one perfect score, and I'm happy with the overall result.