London (CNN Business) The United States is giving the United Kingdom a preview of what it can expect from take-no-prisoners trade negotiations after Brexit.

The Trump administration on Thursday outlined its goals for a free trade deal with Britain in a document that takes a tough line on agricultural products and warns the United Kingdom against getting cozy with China.

The list of priorities, which runs to 18 pages, makes sobering reading for a British government that was hoping for a quick deal on trade with the word's largest economy after Brexit.

"This is an uncompromising document from the US point of view, with no mention of mutual benefit," said David Henig, the director of the UK Trade Policy Project and a former UK trade official.

Supporters of Brexit have touted the ability to strike new trade deals with America and China as a major benefit of leaving the European Union, which conducts trade policy on behalf of its members. And President Donald Trump had promised the United Kingdom a "very, very big deal, very very quickly."

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