The Wharves and Temporary Storage Facilities (Approval Condition and Transitional Provision) (EU Exit) Regulations 2018

These Regulations allow HM Revenue and Customs to require a place to be equipped for full compliance with customs import and export requirements (such as storage and declarations), before it is approved for United Kingdom customs purposes as a wharf or temporary storage facility (transit shed).

Link: The Wharves and Temporary Storage Facilities (Approval Condition and Transitional Provision) (EU Exit) Regulations 2018
Source: Legislation .gov.uk