Ok ok lets back up a bit. Here is what we need to know:
1) Confirm the "mode" button next to the gear stick is specific to the DCC, i.e. only fitted on cars with £800 DCC option. Or is it just a driver profile selection button fitted to all cars as standard?
2) Does the "DCC" menu option appear in the menu unit only if you spec the £800 DCC option. This would seem to be a no brainer, if you don't buy it you don't get it. Yet, MH's Dad's car seems to have the option and he didn't spec it.
And presumably the ACC option in the picture posted earlier refers to the cruise control, because the DCC further up is the chassis control...