Dazzozo, one of MoDaCo's Developer Team, has released a very early port of Ubuntu Touch for the Huawei Ascend G300, which is currently only available as a developer preview for Nexus devices.
The Touch Developer Preview project provides the open source code for enthusiasts and developers, to familiarise themselves with Ubuntu's phone and tablet experience and develop applications on spare devices
The Ubuntu Touch Developer Preview is a collection of open source projects that bring Ubuntu to multiple devices and form factors.
It is currently work in progress and intended for enthusiasts who want to contribute testing and building the platform.
If you want to see what Dazzozo has achieved so far and try it for yourself, head on over to the [DEV] Ubuntu Touch [ROM] thread.