Update October 26, 2022: Ukraine has been added to the list of countries which are part of the Common Transit Convention.
The Common Transit Convention is used to ease the movement of goods between or through any common transit countries.
The UK is a member of the Common Transit Convention.
The other members are:
- Iceland
- Liechtenstein
- Republic of North Macedonia
- Norway
- Serbia
- Switzerland
- the EU including the EU special territories where customs rules apply
- Turkey
- Ukraine
Source gov.uk