Question to the Home Office:

To ask the Secretary of State for the Home Department, what the cost to the public purse has been to date of updating the warning index and Semaphore systems.

Break down by years is available at the following link: https://www.nao.org.uk/report/home-office-e-borders-and-successor-programmes/

Spend prior to April 2006 is not available due to Departmental changes in the accounting system.