with regards to transferring the telephone into your name im pretty sure that they cant do that under the DPA will check tommorow in work though.
with the mobile offer, that is dealt with by virgin mobile, to be honest you would be better off signing up online
http://www.whycable.co.uk/virginmobileoffer/
and follow it up a few days later with a call to virgin to make sure they have recieved the request