This is a sec ID investigation into mis-use of BT computers,
the company are legally allowed to read your e-mails and track your internet activity and have the forensic ability to RECOVER EVERYTHING!!!!
The message is simple...stick to the BT usage policy and ask your manager to clarify what exactly you can and cannot do with your laptop.

also please be advised that your BT laptop is only for approved BT content and BT are actively auditing laptops. any content that is not approved by BT my result in disciplinary action or even dismissal at the very worst. If you have anything on your laptop that has not come from a BT source REMOVE IT IMMEDIATELY.