Craig from TCLSATNAV did the work. Currently he is supplying 2013 SPEC replacement units along with 2013 DVD updates which include all the latest speed camera info [The disc came with the RNSE]. These are a straight swap and he takes the surround from the old RNSE unit and retro fits it to the new one so the new RNSE looks just right on the dash.
The RNSE upgrade brings the car tech spec bang up to date with a very decent screen, fast satnav and proper media capabilites with an iphone/hard disk [via the AMI] - a really worth while upgrade IMHO.
I also had my Vagcom settings tweaked [unlock all doors on single key press & blip alarm on door lock]
The only problem I found is that I formatted my new HD using my MAC and the equivalent of a FAT32 format - only to find that this wont work on the AMI - You need to use windows to format the drive
Now to find a DAB solution that I can use with the RNSE without any external controls - so far I have found it is not possible unless you have a MFSW
