Nawaz and Kulsoom married in 1971 and had four children - Hassan, Hussain, Maryam and Asma.
She was diagnosed with lymphoma previous year, barely a month after Nawaz Sharif was removed from office by the Supreme Court, which ordered him to face trial in an anti-corruption court. "They had to leave her behind, I don't know what they'll be going through right now".
New Prime Minister Imran Khan issued a statement offering condolences and ordering the Pakistani High Commission in London to "provide the family all the necessary facilities and cooperation".
Three-time-premier Nawaz Sharif, who was removed from office in each of his elected terms, has maintained that his most recent ouster in July 2017 and subsequent conviction were part of a plot against him by the powerful military and the judiciary.
The government has chose to free Nawaz, Maryam and Safdar on parole so that they can attend the final rites of the former first lady on Friday.
The funeral prayers of Pakistan's former first lady will be offered at the Regent's Park mosque in central London. Since then, Nawaz Sharif and Maryam Nawaz have been making trips back and forth to visit ailing Kulsoom Nawaz.
Moreover, Dar's passports have also been cancelled and he has been put on the National Accountability Bureau's (NAB) blacklist.
"The (Sharif) family is in jail and if they apply to participate in the rituals as per law, we have no objection".
The 68-year-old had been diagnosed with early-stage lymphoma in August last year and had been London since, the Dawn reported.
Both her sons Hassan and Hussain reside in the United Kingdom and cared for her while Nawaz and Maryam attended near daily hearings of the corruption trial.
Both sons Hassan and Hussain reside in the United Kingdom and cared for her while Nawaz and Maryam attended near daily hearings of their corruption trial.
But she could never return to the country to take her oath as a member of parliament. She received a Master's degree in Urdu from Punjab University in 1970.
According to Pakistan media Geo TV, Pakistan Muslim League-Nawaz President Shehbaz Sharif and her son, Hussain Nawaz, confirmed that the former first lady breathed her last at a clinic in London. Both were arrested on arrival and have been imprisoned since.
Begum Kulsoom led defiant, lonely protests against the Musharraf regime to get her husband freed from prison. As a result, the family welcomed the military coup of 1977 which toppled Mr Bhutto's government and sent him to the gallows two years later following a controversial trial. "She's contributed famously to my father's life and to democracy in Pakistan".
Arif Alvi condoled the bereaved family.
Talking to a private news channel, Ahsan said he tenders an apology to the Sharif family.
Former Pakistan Cricket Board chairperson Najam Sethi also expressed his grief. "May Allah bless the departed soul eternal peace at Heaven-Amen", the director general of Inter-Services Public Relations said in a message.