President Donald Trump announced from the White House on Thursday that his government has reached a trade agreement with the United Kingdom. The deal affirms that "reciprocity and fairness is a vital principle of international trade," Trump said from the Oval Office. The agreement increases access for U.S. beef, ethanol, and other agricultural products, Trump added. It also fast tracks American goods through the U.K.'s customs process, Trump said. He cautioned that final details will come in the "coming weeks." "They're opening up the country," Trump said. "The country is a little closed." Although Trump has touted the trade deal with the U.K., he also conceded that there's more work to do. "The final details are being written up," he said in the Oval Office. "In the coming weeks, we'll have it all very conclusive." Trade agreements are notoriously complex and can be time consuming to finalize. However, Trump has been racing to reach deals as he tries to fulfill his promises since launching his tariff agenda last month.