Here's the rundown as I understand it:
Both the U.S. and the U.K. get the C-5 model. Same colors, same frame, same fenders.
The G-5 Bullet is a U.S. exclusive. It uses an old Electra frame with a 350 front mudguard and a pinstriped paint job. This also comes in a Deluxe version that has a chrome side cover, tank, and fenders. The fenders are still the larger 350 size.
The E-5 Bullet is a U.K. exclusive. This one, like the G-5, shares the Electra frame, but it doesn't bother with any Bullet Classic styling cues. It has the Electra's paint jobs, fenders, etc. Everything is the same as on the Electra model except for the motor, which is, of course, the kicker UCE model. This, like the G-5, comes with a Deluxe version, which is exactly the same as a G-5 Deluxe, but with an all-chrome engine block and a skinner front mudguard (still chrome).
As far as I know, that's all five of this year's models, minus the conversion kits. The C-5, two G-5's, and two E-5's, the latter four of which all share the same frame.