An ENS is a declaration provided by the shipper or the importer to the UK customs, providing information on the cargo, EORI numbers of the shipper & the consignee, items commodity code, number of packages, container number, seal number, gross weight of the goods, and incoterms, are some general information required for the ENS declaration. These declarations should be made before the goods are despatched. This helps the UK customs to do a proper security assessment of the cargo that is entering into the UK and provide the shipper with a response on if the cargo can be despatched or not and if more documentations or certificates are needed for the cargo to enter the UK borders. If the cargo is approved to be shipped a Movement Reference Number (MRN) will be provided to the shipper.