It was meant to be an ordinary Thursday for millions of Londoners, who traipsed towards the tube, sleepy-eyed, as they took their usual commute to work.

However, the events of 7 July 2005 were set to change the capital forever. They also changed the personal lives of hundreds who were injured or lost a loved one, when four men decided to detonate home-made explosives – three on the London Underground, and one on a bus – in an act of extremist terrorism that shocked Londoners and the world.

Now, a new Netflix series is set to examine the tragic circumstances which led up to this event, and the shocking aftermath that saw a similar, copycat attack in London just two weeks later. Luckily this second attack, known as the 21/7 bombings, failed.

But who were the men behind the 7/7 bombings, which killed 52 and injured 784 more? In light of the renewed interest, and with the 20th anniversary of the attacks on the horizon, we look at the perpetrators who caused chaos in the capital.

The 7/7 London BombersMohammad Sidique Khan unspecified september 2: in this video grab taken from a broadcast by arab television, london suicide bomber mohammad sidique khan, from dewsbury in west yorkshire, relays a message before claiming the lives of six people and injuring 120 in the edgware road circle line attack in london. the three july 7 explosions on london underground trains and one on a bus killed at least 55 people people and injured 700 during the morning rush hour terrorist attacks. (photo by getty images)

getty images

The 30-year-old, who was born in Britain and raised in Leeds, worked as a teaching assistant at a local primary school. Married and with a daughter, those who knew Khan described him as a “quiet” individual. He was the considered the ‘lead’ bomber, and was considered by others involved in the attacks as a ‘father figure’.

It was in the early 2000s that Khan started to flirt with more extremist beliefs, and in 2001, he began to frequently travel to Pakistan where he attended training camps associated with Al-Qaeda. He was reportedly in contact with London-based Al-Qaeda operatives. The Iqra bookshop, based in Leeds, was a place where Khan held late-night discussions about the ‘evils’ of Western foreign policy, such as the UK and US’s involvement in conflict in Muslim countries. It was within these local circles, including family connections, nearby gyms and mosques, that Khan and the other three bombers became connected. The four used a rental house in the area in order to build their explosive devices.

luton, england july 7: in this handout image taken fron cctv footage, and released by the metropolitan police on july 16, 2005, the four london bombers are pictured together entering luton rail station at 0720 bst on july 7, 2005 on their way to london. the three resulting explosions on london underground trains and one on a bus killed at least 55 people people and injured 700 during the morning rush hour terrorist attacks. (photo by metropolitan police via getty images)

Handout

While Khan did not have any criminal convictions, he was monitored by MI5 in 2004 due to his indirect association with another plot, spearheaded by Omar Khyam, to set off a wave of fertiliser-based explosions around the country. However, surveillance was dropped as there was not enough evidence to keep trailing him at the time.

On 7 July, Khan, alongside the three other bombers, left Leeds and headed to Luton. The men then travelled by train to London’s King’s Cross station. Khan boarded a Circle Line tube train, detonating his bomb at Edgware Road station, killing six people.

The bombing was actually meant to take place the day before, however, Khan was forced to delay the operation due to complications with his wife’s pregnancy, which meant he needed to take her to hospital. The earlier plan was for the four suicide bombers to set off their bombs at Bond Street, South Kensington, Paddington and Westminster stations.

In a video, released in September 2005 by Al Jazeera Television, a pre-recorded clip of Khan saw him attempt to justify his actions.

“Your democratically elected governments continually perpetrate atrocities against my people all over the world,” he said. “Your support makes you directly responsible. We are at war and I am a soldier. Now you too will taste the reality of this situation.”

Shehzad Tanweer, : a video grab taken 06 july 2006 from the qatar based news channel al jazeera shows shehzad tanweer, one of the suicide bombers who attacked londons transport system last july 7. the al jazeera broadcast was taken from a video produced by the al qaeda linked media group as sahab. afp photo/al jazeera qatar internet out (photo credit should read /afp via getty images)

AFP//Getty Images

The 22-year-old, who was also born in Britain and lived in Leeds, was the son of a prominent businessman. Tanweer worked in one of his father’s fish and chip shops at the time of the attack.

Tanweer attended several mosques, including Bengali and Stratford Street mosque in Beeston, Leeds, where two of the other London bombers, Khan and Hasib Hussain, are also believed to have worshipped. Tanweer’s sister was married to Khan, with Khan and Tanweer known to have headed to Pakistan together to attend a terrorist training camp.

On the day of the attack itself, Tanweer travelled eastbound on the Circle line from Kings Cross, detonating his bomb on a train between Liverpool Street and Aldgate stations, killing seven people.

A year after the 7/7 bombings, a video statement by Tanweer was broadcast by Al-Jazeera, where he said: “What you have witnessed now is only the beginning of a string of attacks that will continue and become stronger until you pull your forces out of Afghanistan and Iraq. And until you stop your financial and military support to America and Israel.”

Germaine Lindsaya pedestrian leaves a bouquet of flowers outside kings cross station 08 july 2005, following the 07 july bomb explosions in london, as the number of deaths appears to be larger than initially stated. british home secretary charles clarke admitted on friday that the london bomb attacks that killed more than 50 people came out of the blue and insisted that they did not represent a failure by intelligence services. afp photo/martyn hayhow (photo credit should read martyn hayhow/afp via getty images)

MARTYN HAYHOW//Getty Images

Also known as ‘Abdullah Shaheed Jamal’, the 19-year-old was born in Jamaica and moved to the UK when he was just five with his mother. The family settled in Huddersfield – where Lindsay would eventually meet ringleader Khan.

Lindsay converted to Islam in 2000 alongside his mother, and attended classes where he read the Quran and learned Arabic. It has been claimed that he was radicalised by extremist preacher, Abdallah al-Faisal, who was eventually imprisoned in 2003 for inciting racial hatred and murder.

After Lindsay’s mother relocated to the United States, Lindsay, still only a teenager, was left alone in Huddersfield, where he claimed benefits and worked odd jobs, such as carpet fitting and selling mobile phone covers.

In 2002, Lindsay married Samantha Lewthwaite, a white British convert to Islam whom he had met on the internet and then later, at a protest. He then moved to Aylesbury, where Lewthwaite was based. Lewthwaite herself has since gained notoriety as a terrorist, with links to Somalia-based radical Islamic militant group Al-Shabaab after Lindsay’s death.

london in his handout photo released by the metropolitan police july 9, 2005, the london underground train damaged in a terrorist bombing rests on the tracks at the aldgate tube station. a massive police investigation is underway to track down suspected al qaeda bombers who stuck three underground trains and a bus during the morning rush hour july 7, 2005, killing 49 people and injuring 700 others. (photo by metropolitan police via getty images)pinterest

Handout//Getty Images

On the day of the 7/7 bombings, Lindsay met the other assailants in Luton. He detonated his bomb on the Piccadilly line, between King’s Cross St Pancras and Russell Square tube stations. He killed 26 people.

Hasib Hussainunspecified: this combination photo shows two handout images released by the metropolitan police on july 14, 2005. on the right is a cctv image of hasib hussain seen at luton station on july 7, 2005 and on the left is a headshot of hasib hussain from his driving licence. hussain was on the no 30 bus in london which exploded on july 7, 2005 killing at least 13 people. police found his driving licence and cash cards after searching the wrecked bus. at least 53 people were killed and 700 injured during morning rush hour terrorist attacks which were targeted at londons transport links with 3 bombs exploding on underground trains and one on a bus on july 7. (photo by metropolitan police via getty images)

Handout//Getty Images

The 18-year-old was born in Leeds and was described as “quiet” by those who knew him. He was a keen sportsman, playing football and cricket on local teams. Teachers who knew him described Hussain as “a slow, gentle giant”. It was in the latter half of 2003 that Hussain met Khan and Tanweer, with the three all believed to attend the Stratford Street Mosque in Beeston.

In the months before the attacks, Hussain had rented a small flat in the Chapeltown area of Leeds – thought to be the property that was used to make the explosives used in the 7/7 bombings.

On the day of the attacks, Hussain travelled down with Khan and Tanweer from Leeds to Luton, where Linsday met them. It is thought that Hussain was intending to target a Northern line train – however, that morning, Northern line services had been suspended. CCTV shows Hussain in Boots at King’s Cross, trying to get hold of the other bombers – who, at this point, had already detonated their devices. Around 50 minutes later, he detonated his bomb on the Number 30 bus heading from Marble Arch to Hackney Wick.

london july 08: a view of the bus destroyed by a bomb in woburn place on july 8, 2005 in london. up to 50 people were killed and 700 injured during morning rush hour terrorist attacks yesterday. (photo by peter macdiarmid/getty images)

Peter Macdiarmid//Getty Images

On 7 July, Hussain’s family reported him missing, having previously been told he was going up to London to visit friends.

In a statement, his family later said Hussain had been “a loving and normal young man who gave us no concern”.

“We are having difficulty taking this in,” they said.

“Our thoughts are with all the bereaved families and we have to live ourselves with the loss of our son in these difficult circumstances.

“We had no knowledge of his activities and, had we done, we would have done everything in our power to stop him.”

What happened during the 7/7 London bombing attacks?

At 06.51am on 7 July, all four suicide bombers met at Luton train station, getting their explosives out of the boot of a rented Nissan Micra. They got on a delayed train to King’s Cross, which arrived at 08.23 – entering the London Underground shortly after. At 08.26am, they each look to board different trains.

london july 7: members of the london fire service secure the area around edgware road underground station after several bomb blasts ripped across londons underground network on july 7, 2005 in london, england. three explosions on the underground left at least 37 people dead, and many more injured. prime minister tony blair who returned from the g8 summit described the attack as barbaric. (photo by gareth cattermole/getty images)

Gareth Cattermole//Getty Images

At 08.49, Khan, Tanweer and Lindsay’s bombs all detonate within 50 seconds of each other. Tanweer sets off his bomb between Liverpool Street and Aldgate stations on the eastbound Circle Line, killing seven. Khan, on a westbound Circle Line train, detonates his rucksack between Edgware Road and Paddington, killing six. Lindsay, on a packed westbound Piccadilly Line train, sets off his bomb between King’s Cross and Russell Square, killing 26.

At 09.13am, an emergency was declared on the London Underground. A further instruction was sent at 09.40am to begin evacuating an estimated 200,000 passengers from more than 500 trains. At 09.47am, Hussain detonates his bomb on the number 30 double-decker bus in Tavistock Square, near King’s Cross, killing 13 people.

How many people died in the 7/7 July bombings?

As well as the four suicide bombers, 52 people were killed in the attacks, with a further 784 injured. It was the UK’s deadliest terrorist incident since the 1988 Lockerbie bombing when a Pam-Am airlines flight exploded over the Scottish town, killing all 259 passengers and 11 people on the ground.

Attack on London: Hunting the 7/7 Bombers is available to watch on Netflix now

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Kimberley Bond is a Multiplatform Writer for Harper’s Bazaar, focusing on the arts, culture, careers and lifestyle. She previously worked as a Features Writer for Cosmopolitan UK, and has bylines at The Telegraph, The Independent and British Vogue among countless others.