Further to the above. E! HD will complete the HD versions of Comcast channels exclusively available in the Full House packages.
It is currently testing on 4 internal VM networks - TTA Knowsley DMC (Hayes_RHE), TTA Bromley DMC (Bromley RHE), NGRHEE Knowsley & NGRHEE Bromley.
The duplicate version of BT Sport 1 HD has been assigned the same EPG slot as the original channel, is missing several flags in the SDT and doesn't appear to be in the NIT at all, so not yet added to (testing on) VM's internal networks. Perhaps this will be an alternative version, maybe if sports rights are not available in one of the nations? A mystery for the moment, at least until VM add more flags / add it to the NIT. TSID 18 is a strange location for this channel given its former and current/interim use.
I could list the transition of the former Sky Cinema SD placeholders from original to "graveyard" placeholder SIDs, but as the channels are closed it seems pointless. If anyone wishes to see the detail, leave a comment and I'll list the changes.