 Complete the following phrase:  In a press conference at The O2 Arena on 15 December 2016, the American professional wrestling promotion WWE announced plans to establish a United Kingdom-based brand on which professional wrestlers from the country would compete. The WWE United Kingdom Championship later renamed NXT United Kingdom Championship was established that same day, however, it was not until mid-2018 when NXT UK was formally established as the United Kingdom-based brand, and sister brand of the American-based NXT. On 18 June during the first night of the 