Food Businesses Brace For A New Wave Of Post-Brexit Paperwork Affecting Pizza, Pies And Sandwiches 1 hr The UK food industry is warning that a deluge of new post-Brexit red tape which comes into effect today will increase export paperwork by a third and make some sales to Europe unviable. The European Union is today introducing a wave of new requirements for composite (multi-ingredient) food products entering the bloc from third countries like the UK. This is on top of the myriad border checks that began on January 1 when the UK left the EU's Single Market and Customs Union and starting trading with the bloc on looser terms.