The number of Islamism-inspired terrorism offences in the UK has nearly doubled in the five years to the end of 2015, according to a new report. The period from 1998 to 2015, studied in a report on Islamist terrorism on British soil, has also seen a surge in the number of women taking part in these crimes with offenders are getting younger and the bulk of the Islamism-inspired threat coming from home-grown terrorism.