Abstract: A user terminal apparatus comprises: a hypervisor or other virtual machine host, operable to provide a virtual machine; a guest operating system that is hosted within the virtual machine; a plurality of hardware devices; a plurality of device drivers associated with the plurality of devices; and at least one application or other software configured to run on the virtual machine to communicate with and/or control one or more of the devices via said guest operating system and via one or more of said device drivers, wherein said one or more device drivers comprise device drivers that are supported by the hypervisor or other virtual machine host; and at least some of said hardware devices supported by the hypervisor or other virtual machine host are unsupported by the guest operating system.