Data recovery of Bitlocker drive.

Ok here is the deal. I had a new laptop that dual booted vista and linux. the vista partitioned was encrypted with bitlocker. I decide to give windows 7 a try so I repartition the drive in to one large volume, format and install windows 7. Everything worked perfectly. The problem is after about a week I realize there was some important files on the vista partition before I wiped everything out. I have found several data recovery programs the can recover files after a format, however they only show files that where on the linux partition. My guess is that the bitlocker encryption is preventing these tools from finding any of the vista files.

So the question is, Does anyone know of a application or company that can recover files from a bitlocker'ed drive after it has been formatted.