OK, ME Firmware has been updating to 9.1.37.1002 but still I see no sign of MEBx / AMT. Also Ctrl+P does nothing. I wonder if the restriction is within the CPU or if it is Lenovo which have not enabled in within the BIOS. The problem is that going forwards we will be looking to purchase many more corporate systems and we need a way to find out if these contain AMT / MEBx. I guess we'll just have to ask the vendor and hope that they know!
Graham