![A prison guard walks past a sign to the prison mosque inside Wandsworth prison. HMP Wandsworth in South West London was built in 1851 and is one of the largest prisons in Western Europe. It has a capacity of 1456 prisoners. (Photo by In Pictures Ltd./Corbis via Getty Images)](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/KS2UTM2E4VX2XD6JIPNBRBNRZQ.jpg?smart=true&auth=b71fb7c203029cfc11b1b4b43d1d80108b7a28a36b72f162b2a3f715a7e1696d&width=400&height=225)
A prison guard walks past a sign to the prison mosque inside Wandsworth prison. Getty Images
A prison guard walks past a sign to the prison mosque inside Wandsworth prison. Getty Images
UK Muslim prison gangs dubbed the ‘brotherhood’ fuel radicalisation fears
Report reveals gangs use violence to force inmates to convert to Islam