Interior Minister Chaudhry Nisar Ali Khan left Islamabad for London on Sunday for medical check up.
The minister was to proceed to London earlier but had postponed it due to threat by PTI for Islamabad lockup.
The interior minister during his stay would also meet the British Home secretary and foreign secretary to discuss relations between the two countries. The Interior Minister during meeting with British Home secretary would particularly discuss progress on Imran Farooq murder case.