Sadiq Khan, who was Saturday re-elected for a record third term as London mayor, rose from humble roots to spar with world leaders and bring consequential change to the British capital.

The 53-year-old Labour party politician – a former human rights lawyer brought up on a London public housing complex – comfortably defeated Conservative rival Susan Hall for a third stint at City Hall.

He now overtakes predecessor Boris Johnson as the longest-serving holder of the post, which notably has powers over the emergency services, transport and planning in the city of nearly nine million.

Victory continues a remarkable journey for the Pakistani immigrant bus driver’s son, who became the first Muslim mayor of a Western capital when initially elected in 2016.

As mayor, he has made a name for himself as a vocal critic of Brexit and successive Conservative prime ministers, including Johnson, as well as for a feud with former US president Donald Trump.

The pair became embroiled in an extraordinary war of words after Khan criticised Trump’s travel ban on people from certain Muslim countries.

Trump then accused Khan of doing a “very bad job on terrorism” and called him a “stone cold loser” and a “national disgrace”.

The mayor in turn allowed an infamous blimp of Trump dressed as a baby in a nappy to fly above protests in Parliament Square during his 2018 visit to Britain.

“He once called me a stone cold loser. Only one of us is a loser, and it’s not me,” Khan told AFP during his 2021 campaign.

Knife crime

But Khan’s own tenure has not been without its controversies, particularly over last year’s expansion of an Ultra-Low Emission Zone into the largest pollution-charging scheme in the world.

The daily toll on the most-polluting vehicles prompted a fierce backlash in outer boroughs of Greater London, with anger at the extra financial burden during a cost-of-living crisis.

Khan has also been criticised for failing to get to grips with high levels of knife crime and since last year, his handling of large weekly pro-Palestinian protests.

Born in London in 1970 to parents who had recently arrived from Pakistan, Khan was the fifth child out of seven brothers and one sister.

He grew up in public housing in Tooting, an ethnically mixed residential area in south London, and slept in a bunk-bed until he was 24.

His modest background plays well in a city that is proud of its diversity and loves a self-made success story.

Khan still regularly recalls how his father drove one of London’s famous red buses, and his mother was a seamstress.

He is a handy boxer, having learnt the sport to defend himself in the streets against those who hurled racist abuse at him, and two of his brothers are boxing coaches.

He initially wanted to become a dentist, but a teacher spotted his gift for verbal sparring and directed him towards law.

He gained a law degree from the University of North London and started out as a trainee lawyer in 1994 at the Christian Fisher legal firm, where he was eventually made a partner.

He specialised in human rights, and spent three years chairing the civil liberties campaign group Liberty.

He represented Louis Farrakhan, leader of the Nation of Islam movement, and Babar Ahmad, a mosque acquaintance who was jailed in the United States after admitting providing support to the Taliban regime in Afghanistan.

Higher ambitions?

Khan joined Labour aged 15 when Conservative prime minister Margaret Thatcher was in her pomp.

He became a local councillor for Tooting in the Conservative-dominated Wandsworth local borough in 1994, and its member of parliament in 2005.

He still lives in the area with his lawyer wife Saadiya and their two teenage daughters.

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Labour prime minister Gordon Brown made him communities minister in 2008 and he later served as transport minister, becoming the first Muslim minister to attend Cabinet meetings.

In parliament, he voted for gay marriage – which earned him death threats.

As mayor, he vowed to focus on providing affordable homes for Londoners and freezing transport fares, but – like many in power around the world – saw his agenda engulfed by the pandemic.

He is London’s third mayor after Labour’s Ken Livingstone (2000-2008) and Johnson (2008-2016), with widespread speculation he could eventually try to follow in his predecessor and become prime minister.