London Mayor Sadiq Khan said unlike former Presidents George W. Bush and Barack Obama, President Trump is not worthy of the honors of an official state visit.
Khan said because the United Kingdom has a special relationship with the U.S., they should call out immoral behavior and not have to dignify it.
https://www.washingtonexaminer.com/news/london-mayor-says-trump-not-worthy-of-a-state-visit