The “level playing field”, included in the Withdrawl Agreement negotiated by Mr Johnson’s predecessor, was a commitment to abide by certain rules in exchange for market access.
But, according to the Sun newspaper, British negotiators are keen to abandon EU restrictions on genetically modified food – a key demand of American trade lobbyists.
https://www.politicshome.com/news/europe/eu-policy-agenda/agriculture/news/107053/brexit-uk-moves-scrap-%E2%80%98level-playing-field%E2%80%99-eu