[Rex]

Box Channels are closing later this year as part of the Channel 4 cuts.

x.com 

Figured that they were the first ones to be culled with the cuts, but they've also warned that further channels will be cut at the 'right time'. The Box channels do not meet Channel 4's 'public value or scale' criteria for well-documented reasons, hence their impending closure.

Feels like even some of the current services like 4seven and the timeshifts will end up being closed in the long term too, alongside the eventual need to convert the HD channels to FTA and closing SD simulcasts. At the very least, E4 and Film4 should be kept running but for the rest of the C4 branded channels it's just a matter of which one goes at this point.