Hi again pete37593
The Sky Cinema channels on 401-412 are only available in HD. If you want to watch any Sky Movies in UHD then you need to pay the additional £7 a month on top of the Sky Movies subscription and then you will be able to watch the UHD movies which are available via the Sky Movies UHD On Demand section.
The 488 I referred to is not a channel number, it's the actual number of Sky Movies in UHD currently available in that On Demand section.
Again the 199 I referred to is not a channel, I was telling you the current total of Sky programs/box sets in UHD via On Demand is currently 119.