Britain's new London Mayor Sadiq Khan | Leon Neal/AFP via Getty Images Sadiq Khan rejects Donald Trump’s offer to be ‘exception’ to Muslim ban London’s new mayor says the US presidential hopeful risks playing into the hands of extremists.

London's first Muslim mayor Sadiq Khan has rebuffed Donald Trump’s suggestion that he could be an exception to the presidential candidate's proposed policy to ban all Muslims from the United States.

"This isn’t just about me," Khan told Buzzfeed. “It’s about my friends, my family, and everyone who comes from a background similar to mine, anywhere in the world.”

The newly elected mayor of London made the comments after Trump told the New York Times “there will always be exceptions” when asked about how Khan would be affected by the proposed ban.

However, Khan is not convinced. “Donald Trump’s ignorant view of Islam could make both our countries less safe," he said, adding that Trump "risks alienating mainstream Muslims around the world and plays into the hands of the extremists."

"Donald Trump and those around him think that western liberal values are incompatible with mainstream Islam – London has proved him wrong,” Khan said.

After being named mayor on Friday Khan also attacked the Conservative campaign for being “straight out of Donald Trump’s handbook.”