The T1 document is required when transporting goods from the UK through Europe to the destination Customs Office. Its possession is necessary if, as soon as the customs goods enter the European Union, the goods are not durable at the first possible Customs Office. ...

The T2 document is intended for use when transporting goods from one country in the European Union to another, which is also a member of the community, but their transport is through non-member countries. Its possession presupposes a customs guarantee...

An EU export entry is needed to export goods from the European Union to countries outside the EU, including the UK. Transport can take place by land, sea and air. 

EU import entry is required for the import of goods into the European Union. It is necessary in order for the goods in question to enter a member country and be allowed to circulate in it. You can also use the Smart Border Clearance Package, which includes an export declaration...

UK export entry is required for each shipment from the UK or other third countries to the European Union. Export declarations help collect the required data, while protecting the shipment from unauthorized returns of goods. Export declarations additionally...

UK CDS import entry is required for the entry of a particular good into the UK and its release for free circulation. This applies to goods from both the EU and other non-EU countries. This is a much simpler form of import declaration, which means the same as a regular shipping...