Opposition Leader in National Assembly Chaudhry Nisar Ali Khan has said those who are harping the tune of Musharraf will also be packed to London. Addressing local leadership of PML-N here on Saturday at Punjab House Rawalpindi, he said that the party would announce its candidate for NA-55 Rawalpindi by-election next week after the return of PML-N chief Mian Nawaz Sharif from Saudi Arabia.