From Hansard – written answer relating to the future of the ISA
Mrs Chapman: To ask the Secretary of State for the Home Department whether she has made an assessment of the effects on the local economy of closing her Department’s offices in Darlington; and if she will publish a cost-benefit review of closure. 
Lynne Featherstone: The Home Office does not have plans to close any of its offices in Darlington. The Independent Safeguarding Authority (ISA), which is a non-departmental public body, sponsored by the Home Office, is located in Darlington. The VBS review, which is under way, will consider the role of the ISA. There are no plans to close the ISA’s offices and therefore a cost benefit review has not been commissioned or published.
Source: Hansard – Written Answer