Five former pupils from a school dubbed 'the socialist Eton' have now died on the battlefields of Syria and Iraq.

A sixth-former from Holland Park School, located in the heart of the Royal Borough of Kensington and Chelsea, continues to fight with ISIS while another jailed last November after being convicted of funding her husband fighting in Syria.

One of the dead Britons from the school — in a catchment area that includes some of the wealthiest addresses in the capital — led a team of suicide car bombers helping ISIS to seize a key stronghold in Irag, it has been reported.

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Holland Park School in Chelsea, where the trio went to school; 60 per cent of its pupils come from a wide range of ethnic backgrounds and speak English as a second language

Former A-level pupil Fatlum Shalaku, 20, of Ladbroke Grove, west London, was one of six 'martyrs' involved in strikes on government buildings in Ramadi, the Sunday Times reports. His brother Falmur, 23, is said to have died in Iraq in March.

Neighbours reported that the brothers, who are of Kosovan-Albanian descent became radicalised and went to Syria in 2013, telling their parents they were travelling to do aid work.

They are both said to have been friends of Mohammed Nasser, 21, who died fighting for ISIS after shrapnel hit him in the head.

All attended Britain's first purpose-built comprehensive, just a few streets along from Kensington Palace, where David Cameron considered sending his eldest daughter and is alma mater to the likes of Hollywood actress Anjelica Huston and the late Tony Benn's children.

Killed: Fatlum Shalaku, 20, of Ladbroke Grove, west London, died in suicide car bomb while Mohammed Nasser 21, died fighting for ISIS after shrapnel hit him in the head

Dead: Mohammed el-Araj, left, who became only the second British fighter to be killed during an ambush on Assad forces last year, attended London's Holland Park School

Former pupils: Hamzah Parvez is still fighting in Raqqa after five people from his old school were killed

Nelson Mandela, Bill Gates, Tony Blair and John Major have all visited the school, which underwent an £80million refurbishment in 2012.

The building itself resembles a plush hotel or advertising agency with minimalist sofas and bespoke chairs for both teachers and pupils, created by one of Britain's leading furniture designers.

It also features a sweeping glass atrium, stylish walkways, a roof terrace with panoramic views over the city and a swimming pool in the basement.

About 60 per cent of pupils at Holland Park School come from 'a wide range of ethnic backgrounds', according to Ofsted, and speak English as a second language.

Jihadist sources say the men were first re­cruited by Jabhat al-Nusra, al-Qaeda's affiliate in the region, before they de­fected with other British fighters to Isis.

About a year later they were joined by their friend, Nasser, and by Hamza Parvez, 22, who is still thought to be fighting President's Assad's forces in Syria.

Three months after going, Parvez featured in an ISIS video where he made a call to arms, asking the camera: 'What are we doing sitting in the UK? Sitting in the land which kills Muslims every day?

Duped: Former Holland Park pupil Nawal Msaad was tricked by school friend Amal Elwahabi into carrying cash. She was cleared of funding terrorism

Funding terrorism: Ex-student Amal Elwahabi was jailed for funding her husband fighting in Syria

'It's not the land for us. Are we content with eating Nando's every week? Come to the land of Allah.'

He then reveals his friend, Nasser, had been killed in battle.

HOLLAND PARK SCHOOL Set in the heart of the Royal Borough of Kensington and Chelsea, it is regarded as one of the top state schools in the country. It was given 'Outstanding' in an 2011 Ofsted report that praised the ‘exceptional’ leadership of inspirational and dynamic headmaster Colin Hall, who was appointed in 2001. Last year, 96 per cent of students sitting GCSEs achieve five or more A* to C grades. Five have won places at Oxbridge in the past two academic years. About 60 per cent of pupils at Holland Park School come from ‘a wide range of ethnic backgrounds’, and speak English as a second language. Many former pupils also came from the Ladbroke Grove neighbourhood, where one of the biggest mosques in West London is situated and where many of those killed went to pray. It has a raft of well-known alumni, notably Tony Benn's four children, but also Writer Polly Toynbee, musician Angus Gaye (Aswad), broadcaster Jenny Abramsky, actor and comedian Omid Djalili, singer Yazz, designer Tom Dixon, and TV presenter Miquita Oliver and broadcaster John-Paul Flintoff. Advertisement

Of the remaining pupils, Mohammed el-Araj, 23, became only the second British fighter to be killed during an ambush on Assad forces in 2013.

The son of a Pakistani antiques dealer, was pictured in a propaganda photograph wearing a paramilitary uniform and brandishing an AK-47 assault rifle in war-torn Syria, where he was fighting President Assad's forces alongside terrorist and extremist groups under the name 'Abu Khalid'.

Not long afterwards, Araj was fatally wounded.

The last of the dead former pupils, Nassim Terreri, 25, a west Londoner of Algerian descent, died in gunfire in March 2012.

His family maintain he was a freelance journalist but the Syrian government label­led him a 'terrorist' at the time, with his social media accounts linked to extrem­ist preachers.

While he was a pupil at Holland Park School, Terreri was reportedly in the same year as Amal el-Wahabi, 28, who was jailed last November after being convic­ted of funding her husband fighting in Syria.

She tricked an old schoolfriend, Nawal Msaad, into carrying €20,000 in her underwear on a flight to Turkey. Msaad, from North London, was stopped at Heathrow as she tried to board the flight but was later cleared of funding terrorism.

Holland Park School could not be reached for comment.

Headmaster Colin Hall has previously said the school had a zero tolerance policy on fundamentalism.

‘We take a very strong stance that this is a secular school and whatever you believe or might think, it stops at the school gates when you come in,' he said.