Yes as Ryevac mentioned you can get motors in the USA, try finding a local vacuum shop, they will most likely be willing to replace the motor for you. But they aren't that hard to do, a Dc07 motor will fit as well.
The DC14s in the USA have quieter motors and because carpets are thicker in the USA they have also got a different brush design along with the bottom plate and purple housing, I recommend upgrading those parts too for it to work optimally because the UK DC14s have softer bristles as they are designed for the thinner European carpets