Addicted to tax havens: The secret life of the FTSE 100 tax justice Governance UK Europe Author: ActionAid UK Date published: Tuesday, 11 October 2011 Number of pages: 8 Complete publication: Addicted to tax havens: The secret life of the FTSE 100 The full extent to which FTSE 100 companies use tax havens has, for the first time, been compiled, analysed and published in an accessible and searchable format by ActionAid.