The UK's Department for Environment, Food and Rural Affairs (Defra) has encouraged the fishing industry to start preparing their businesses for the exit from the EU, to ensure they can continue to import and export fish and fish products.   "Delivering the deal negotiated with the EU remains the government’s top priority. This has not changed. However, the government must prepare for every eventuality, including a no-deal scenario," said Defra.   From March 29, 2019, in the event of a no-deal, most fish and fish products will require a catch certificate for import or export between the UK and EU. This also applies to fishermen who land fish directly into EU ports, said Defra.   Catch certificates prove that fish has been caught in line with established conservation and management measures. All non-EU countries are required to present catch certificates when trading with the EU. 

Under the requirements, on leaving the EU:

UK exporters will be required to obtain a validated catch certificate to accompany their exports of most fish or fish products into the EU (excluding some aquaculture products, freshwater fish, some molluscs, fish fry or larvae) Importers will have to submit an import catch certificate to the Port Health Authorities or relevant fisheries authority to be checked before the estimated arrival time into the UK Exporters may also need to obtain supporting documents if the fish has been processed or stored in a country that’s not the flag state

A new IT system to process and issue export catch certificates, and other supporting documentation, is being developed to help streamline the process. Exporters will receive full instructions on how to register and use the new system before the UK leaves the EU, said Defra [...]