The United Kingdom region will be available for Microsoft Dynamics 365 for Talent beginning February 2019. This means that you can create environments in the United Kingdom region and all Talent data will be maintained solely within United Kingdom. You can create an environment in the United Kingdom region by selecting that option in the New environment dialog and use that environment to provision Talent in LCS as described here (Provision Talent).

Data migration of existing projects from other regions to the United Kingdom region is not supported. Only new projects can be provisioned to the United Kingdom region.