There are warning of a rise in teenage terrorists and radicalisation in the United Kingdom continues to increase.

New research into children convicted of terrorism offences in England and Wales has revealed a sharp rise in “homegrown” teenage terrorist activity, with extreme-right ideology fuelling the majority of cases.

The study has been authored by University of Southampton criminology lecturer, Dr Gina Vale, and ISD (Institute for Strategic Dialogue) analyst Hannah Rose. It analysed data spanning the last eight years to map trends in minors’ ideological affiliations and has been published by the International Centre for the Study of Radicalisation (ICSR) at King’s College London.

While the researchers stress that, as yet no attack has been committed by a child in the UK, the data shows children’s support of terrorist networks is a new threat, and that late-stage foiled plots and transnational activism demonstrate the potential is there.

In the report Childhood Innocence? Mapping Trends in Teenage Terrorism Offenders, they reveal that in the UK between 2016 and 2023:

• 43 individuals were convicted of terrorism offences they committed as minors
• 42 were boys – with the youngest offender aged just 13
• Extreme-right activity was the most prevalent ideology, with 25 cases, compared to 16 convictions linked to Islamist activity, and two with unknown or unclear ideologies

“Two clear waves of offending can be identified, with the first dominated by Islamist cases running concurrently with the peak of the Islamic State group’s territorial ‘caliphate’ until its collapse in 2018,” The study said. “The second wave is mostly made up of extreme-right cases and can be seen emerging from 2018.”

Vale explained: “Our research shows that children are not merely passive consumers of content created and shared by adult counterparts. Teenagers across the ideological spectrum have engaged as online innovators and influencers, and violent offline activists.

“Independently of adults, children have succeeded in producing terrorist propaganda, influencing their peers and adults towards violence, and preparing to engage in terroristic violence both domestically and abroad.”

Rose said: “In an era of rising extremist youth activism, greater understanding and better response planning must be a priority for counter-terrorism scholars and practitioners.”

She added: “These findings highlight the need for concurrent responses to severe threats to the public and comprehensive educational programmes which promote critical analysis skills and social cohesion, as well as the effective operationalisation of the emergent digital regulation framework to hold social media companies to account for hosting illegal content”.

The analysis found that almost a third of the children were convicted of preparing an act of terrorism and there were attempts by seven children to travel independently to Syria and Afghanistan for the purpose of engaging in terrorism.

Eight children – five extreme-right and three Islamist – planned to commit domestic attacks on UK soil.

Exerting influence among peers, families, and international followers to their social media accounts, 11 minors were convicted of encouraging terrorism, one for providing training for terrorism, one for membership of a banned organisation and one for inviting support for a banned organisation.

The study found most the common offence was the collection of terrorist content, as 26 minors were found to have engaged with violent extremist literature, downloaded operational materials, and even created their own propaganda,

Proportionally, more extreme-right than Islamist offenders pleaded not guilty, with many denouncing previously held views, citing adverse childhood experiences, explaining their isolation and desire to fit in with online ecosystems, and claiming childhood innocence.

ICSR co-director Dr Alexander Meleagrou-Hitchens said: “ICSR is proud to publish this ground-breaking research, which helps us better understand the ways British teenagers become involved in terrorism, and what can be done to help prevent this.”