LONDON (Reuters) – Britain’s prisons have failed to recognise the dangers of Islamist “gang-type activity” and the impact of Islamist groups has been underestimated for too long by authorities, an independent report into the prison service said. The landmark review on “Terrorism in Prisons” said that for the last 15 years groups of prisoners had adopted “an anti-state Islamist stance” that condones or encourages violence towards non-Muslim prisoners, prison officers and the general public. The review was commissioned after a 2019 attack near London Bridge in which Usman Khan, a convicted Islam…