Windows 7 and XP Instances

The request was refused by DfT OLR Holdings Limited.

Dear DfT OLR Holdings Limited,

I would be most grateful if you would provide me, under the Freedom of Information Act, details in respect to the following questions;

1. How many instances of the Microsoft Windows 7 Operating System are currently in operation across your entire network? How many devices such as kiosks, lap tops etc are still running Windows 7?

2. How many instances of the Microsoft Windows XP Operating System are currently in operation across your entire network ? How many devices such as kiosks, lap tops etc are still running Windows XP?

3. Who is the officer responsible for maintaining and delivering legacy applications to all your users?
Thank you for your help.

Yours faithfully,

Lee Murray