Prime Minister Syed Yousaf Raza Gilani called on the PML-N Chief Nawaz Sharif at his Park Lane apartment in London on Friday to inquire about his health and welfare following a heart surgery. The PML-N leader has been convalescing following a minor heart operation last month when a stent was inserted in his cardiac region. The Prime Minister himself is in London on a private visit in connection with the hospitalisation of his son Haider Gilani. Hasan Nawaz, son of the PML-N leader, received the Prime Minister when he arrived at the apartment building overlooking Hyde Park. The two leaders met for nearly half an hour and discussed political and economic situation in the country. Pakistan High Commissioner to the UK Wajid Shamsul Hasan accompanied Prime Minister Gilani.