A day after London Mayor Sadiq Khan called for an official apology from the UK government on the 1919 Jallianwala Bagh massacre, the UK Foreign Office stopped short of apologising but instead "rightly condemned" the "deeply shameful act".
British Prime Minister David Cameroon visited in February 2013 and offered regrets over the killings, stoppng short of a formal apology.
Khan said that the British government should apologise for the massacre which left hundreds dead.
During a visit to the Jallianwala Bagh memorial and garden, the Mayor paid his respects to those who were killed there in 1919, and made it clear that, nearly 100 years on from the terrible event, the British Government should formally apologise on behalf of the British politicians of the time.
In October, Mayor Sadiq Khan, whose grandparents were born in India and parents migrated from Pakistan to United Kingdom, said he would visit India and Pakistan to promote the British capital as a destination of choice for trade and cultural ties.
Sadiq Khan extended his apologies during today's visit but made it clear that a formal Government apology should have been given decades ago and that, ahead of the centenary of the massacre, it is more important now than ever that the Government properly acknowledges what happened at Jallianwala Bagh to ensure something like this can never happen again.
While the then British government put the casualty figure at 379, a plaque at the memorial site states: "This place is saturated with the blood of about two thousand Hindus, Sikhs and Muslims who were martyred in a non-violent struggle".
Hundreds of Indians, including women and children, were attending a public meeting in a walled garden, known as Jallianwala Bagh, to protest against colonial laws.
The British monarchy and the United Kingdom government have so far not issued a formal apology over Jallianwala Bagh.
The London Mayor, on his maiden visit to Amritsar, also paid tributes to those who died at the sprawling ground in the city. "Our thoughts are with all those who died".
Khan, later December 6, visited the Golden Temple complex, where Harmandir Sahib, the holiest of Sikh shrines, is located and offered prayers. This was also for the first time when a British high ranking official reached Pakistan by road.
The London mayor, of Pakistani-origin, will visit Lahore, Karachi and Islamabad in Pakistan.