Khan, holding the World Boxing Association version of the division will risk the same against Judah, who owns the International Boxing Federation title. Khan, 25-1 with 17 knockouts will fight for his title with Judah, who is 41-6 with 28 knockouts.
In 2005, Judah became the undisputed welterweight world champion. And last March, he took the vacant IBF light-welterweight title by knocking out South Africa's Kaizer Mabuza, in the seventh round.
Khan on the other hand, in December, edged Argentina's Marcos Maidana in a unanimous decision in Las Vegas bout. It has been voted as the best fifth of 2010 by American boxing writers.
Khan vs Judah will be broadcast live on Primetime pay-per-view, channel 480 on Sky.