It's official: the Mi Mix 3 will be available for sale in the UK from January 16th. The Snapdragon 845-powered manual slider phone is to be sold through Amazon, Ebuyer and Xiaomi itself in the country. The company is offering a special introductory price for the device, which will be valid for 24 hours on the 16th.
https://www.notebookcheck.net/Xiaomi-has-announced-an-early-bird-event-for-the-Mi-Mix-3-s-UK-launch.393836.0.html