Both imported and exported goods may in some cases require a license issued by the appropriate authority. Licensable goods include military and dual-use (civil/military) goods, nuclear and biological weapons and related technologies, certain pharmaceuticals and chemical precursors, and advanced technologies such encryption software and certain computer equipment, as well as other goods. Licensing in the EU is mainly mandated by EU legislation in accordance with international agreements (Wassenaar, UN Conventions, etc), although there are also additional UK regulations.

For UK operators, licensing is most often encountered in relation to exports. Importers who also re-export technologies from certain countries such as the US need also to be certain that they comply with any relevant extra-territorial restrictions (For example, the US authorities may license a product to ship to the UK from the US, but this does not necessarily mean that the product can be freely sold from the UK to countries such as Cuba, Syria or Iran, which are sanctioned by the US. This is especially important for UK companies whose parent entities may be headquartered in the US.

4 Eyes Ltd has helped clients to identify and fully comply with their legal obligations, including compliance with extra-territorial provisions imposed by other countries. 4 Eyes Ltd also advises on trade defence in the event of enforcement action