New Delhi, July 26 -- British Prime Minister Andy Burnham has said he would not hesitate to publicly disagree with US President Donald Trump if doing so was necessary to protect Britain's national interests.

In his first major interview since taking office, Burnham told the BBC that his initial conversation with Trump had gone well, describing the US president as "really warm".

However, when asked twice whether he trusted Trump, Burnham stopped short of giving a direct answer, saying the world is constantly changing and that situations must be judged as they evolve. He added that he could not rule out expressing a different view from Trump in the future if he believed it was in Britain's best interests.

"I can't at any point say that I...