Domestic cryogenic transport by road courier is governed by ADR regulations (the European Agreement concerning the International Carriage of Dangerous Goods by Road, applicable in the UK through domestic legislation) and the HSE COSHH framework for safe liquid nitrogen handling. A correctly prepared dry shipper with no free LN2 typically requires no special dangerous goods declaration for domestic road transport, though the driver and consignee must be appropriately informed.
International air transport is governed by IATA Dangerous Goods Regulations and, for UK-outbound shipments, any relevant export controls on biological material. The critical documentation requirement for air transport is the A152 exemption claim on the air waybill. For human reproductive material specifically, receiving countries may additionally require import permits or regulatory authority approvals from their equivalent of the HFEA arranged before shipment. Failure to secure these in advance does not pause the dry shipper hold time at customs.
