Labour's Sadiq Khan has vowed to do all in his power to make London "better", as he was sworn in as the new mayor.
Referring to his council estate roots, Mr Khan, the city's first Muslim mayor, said he wanted all Londoners to have the same opportunities he has had.
At the swearing in ceremony in Southwark Cathedral, Mr Khan said that as a child he "never dreamt" he would one day become the mayor of the capital.
"I'm only here today because of the opportunities and helping hand that our city gave to me and my family.
"My burning ambition for our city, that will guide my mayoralty, is to ensure that all Londoners get the opportunities that my city gave to me," he said.
"I promise you I will always do everything in my power to make our city better. I will be a mayor for all Londoners," he added.
He also pledged to lead "the most transparent, engaged and accessible administration London has ever seen".
In his victory speech after the election result was announced, Mr Khan said the campaign had not been without controversy, but he said was "proud" voters had "chosen hope over fear".
The campaign run by the Conservatives has been criticised by Labour and some in the Tory party for accusing Mr Khan of sharing a platform with Islamist extremists.
"Most transparent", "Hope" - This sounds kind of familiar.
Referring to his council estate roots, Mr Khan, the city's first Muslim mayor, said he wanted all Londoners to have the same opportunities he has had.
At the swearing in ceremony in Southwark Cathedral, Mr Khan said that as a child he "never dreamt" he would one day become the mayor of the capital.
"I'm only here today because of the opportunities and helping hand that our city gave to me and my family.
"My burning ambition for our city, that will guide my mayoralty, is to ensure that all Londoners get the opportunities that my city gave to me," he said.
"I promise you I will always do everything in my power to make our city better. I will be a mayor for all Londoners," he added.
He also pledged to lead "the most transparent, engaged and accessible administration London has ever seen".
In his victory speech after the election result was announced, Mr Khan said the campaign had not been without controversy, but he said was "proud" voters had "chosen hope over fear".
The campaign run by the Conservatives has been criticised by Labour and some in the Tory party for accusing Mr Khan of sharing a platform with Islamist extremists.
"Most transparent", "Hope" - This sounds kind of familiar.
