13-01-2013 21:43 - edited 13-01-2013 21:47
Back track to where you had it last.
Phone the network to bar it's sim and imei
Try find my iPhone app first if you have it turned on tho !
I hope you had the password activated.
Phone the police for a crime number to blacklist it.
Its a risk ones takes having no insurance.
on 14-01-2013 08:02
After the above check any home contents policys that may cover it.
Get a replacement sim from o2 and get a replacement phone to use the sim in (phone at your expense)
on 14-01-2013 12:42