It's really irritating that the Virgin box software doesn't include an option to force SDR, like I have heard the Sky box does (and seen screenshots of the option).
When watching Sky Sports UHD on an SDR TV it forces HDR, which has a muted colour pallette on an SDR TV, so the you get the benefit of the 4K resolution and higher bitrate, but the colour is dull.
What really takes the cake though, is that if you pause Sky Sports UHD and then press the left or right arrow on the remote to skip 10 seconds back or 30 seconds forward, for a split second the signal goes to the SDR colour pallette, before returning to HDR as soon as the footage resumes.
So that means the SDR signal is right there, it just needs a simple toggle in the settings to enable and force (or I'm sure it could even be sophisticated enough to figure out the EDID of the TV to automatically adjust according to the TV's capabilities).
I'll be getting the A95k or LZ2000 this Summer, but for the time being it would be nice to enjoy this channel properly. As it is, I'm just putting up with the muted colour pallette, as the benefit in resolution and bitrate is worth it compared to the HD channel.