No she shouldn't perform Drunk In Love. It served its purpose and its too Urban and ghetto for the Brits. She also got backlash for it after the Grammys and I can't see her rinsing out the whole Jay Z coming out again. XO is perfect for the Brit awards. Its a simple, clean and happy song with a great live feel. The British audience will love it. The song has a lot of potential she should not pay it dust. This is coming from a true Beyonce fan.