Wes Streeting, the U.K. Health Secretary, denied leading a plot to oust Prime Minister Keir Starmer amid speculation about a leadership challenge following the upcoming Autumn Budget.Streeting criticized anonymous briefings from Downing Street, describing them as "self-defeating" and harmful to the Labour government's agenda.Economists warn that Chancellor Rachel Reeves may need to raise taxes due to a fiscal gap, impacting Starmer's leadership amidst concerns from his allies about Streeting as a potential contender.