The electronic monitoring service providers are required to inform the National Offender Management Service within 24 hours of a confirmed breach of a Home Detention Curfew tagging condition. This would include a deliberate tamper with a tag by an offender.
Data provided by the two electronic monitoring suppliers indicates that they met this target in 96.4 per cent. of cases between 1 April 2005, when new electronic monitoring contracts came into force, and 30 September 2006. Data are not available for the period before 1 April 2005.