Former Conservative leader Ian Duncan Smith has said that the new prime minister should come from the Leave camp, with David Cameron due to step down in the wake of Britain's decision to leave the European Union.
Speaking on the Andrew Marr show, the prominent Leave campaigner said: "The government itself had a view... which was to remain, and so now we need to change that position and actually deliver on this very clear mandate from the British people."
Duncan Smith added that he was deeply sad about prime minister David Cameron's resignation and said he wanted him to stay in order to "help stabilise the situation and get us moving".
Cameron has said he will step down in October and that it will be up to his successor to decide when the UK should trigger the departure processes through Article 50, the formal mechanism for leaving the EU.
"I was absolutely clear about my belief that Britain is safer, stronger and better off inside the European Union," he said on Friday.
"The British people have made a very clear decision to take a different path and as such I think the country requires fresh leadership to take it in this direction."
Over two million people have signed a petition for a second referendum. However, experts have branded the move a "waste of time".