thanks for the reply (nice picture)
funny enough just after I typed the post I double checked ebay and bought one. They only had had the earlier iDrive controller trim or the later one with an extra hole behind the controller (I guess that the soft top roof switch?)
typical BM dealership, no idea
now just got to get some updates to see if the business nav CCC can cope with the later controller...
seems current firmware and professional nav just works but few have done it on business nav
fingers crossed. just having a nightmare getting someone to update things.