The National Export System (NES) is a computer-based system which enables export declarations to be made electronically, replacing manual processing.
Use of NES is mandatory for exporters, who must be authorised to use it.
NES operates within CHIEF - the nationwide electronic Customs Handling of Import and Export Freight system that controls the movement of international cargo.
The European Union's (EU's) Export Control System (ECS), electronically controls indirect exports and was built onto CHIEF in the UK so, in most circumstances, there is no requirement to submit a separate safety and security declaration, as a CHIEF Export Declaration contains the additional ECS fields. Goods under a transit procedure within the EU prior to export to a third country - are also covered in this document.