Shadows of the UK

Shadows of the UK is a sourcebook for the Chronicles of Darkness. It focuses on the United Kingdom and all the supernatural forces inhabiting it.

Summary
From the Onyx Path catalog:

They hunted the moors and forests in the days before Caesar came, and they prowl the towns and cities even now.For millennia, supernatural creatures have walked these islands.From the Scottish Highlands to the London streets, danger waits for the unwary.This book includes:

A look at the United Kingdom of the World of Darkness, from the bloody secrets of its long-ago history to the most current threats lurking in London's shadows
An elaborate treatment of the UK's werewolves, from new lodges, rituals and traditions to the strange entities that they hunt and that hunt them in turn
Information on the concerns and key figures of Britain's vampire and mage population