"It appears that instead of simplifying the farming sector leaving the EU with no deal would actually make things more complicated for any farmer  or business wishing to market agricultural products in the 27 countries of the EU. Instead of one set of application documents needed the agricultural sector will have to provide two sets of paper work in order to comply with both UK and EU regulations. This will have added financial costs with increased administration required."
https://theorkneynews.scot/2018/11/05/how-to-prepare-if-the-uk-leaves-the-eu-with-no-deal-farming/