TPIMS (Terrorist Prevention and Investigation Measures) allow the Home Secretary to impose a wide range of punitive restrictions on individuals, entirely outside the justice system, where it's decided, on balance of probabilities, they're involved in terrorism activity. Restrictions include curfews, exclusion from certain places, restrictions on travel/ work, contact with others, use of devices, access to finance, daily reports to police station and GPS monitoring. Individuals aren't charged- only suspected- of terrorism offences.