Right, not familiar with that Cambridge. However, if it's anything like the Azur range it'll need a speaker with a controlled top end.
I'm a huge fan of Focal, having heard the JM Lab Focal 714S and the later 714V with my old Arcam system. They sounded fantastic. Regards the Tannoy, couldn't tell you about the newer range.
Personally (this would be my choice) I'd definitely go with Focal and change the amp - at some point - to a Nad, Arcam, Marantz, older Yamahas.
Sorry for being a bit vague.