The Visiting Forces (Designation) Order 2018

The United Kingdom and Saudi Arabia concluded a Framework Arrangement on Military and Security Co-operation in September 2017. The Agreement contains provisions on reciprocal concurrent jurisdictional arrangements. In order to effect those provisions, it is necessary to designate Saudi Arabia as a country to which the Visiting Forces Act 1952 applies.

Link: The Visiting Forces (Designation) Order 2018
Source: Legislation .gov.uk