CCXTV (channel 23) has moved frequencies on Freeview, from the COM5 multiplex to COM4. Hochanda (channel 85) has made the opposite move. A re-tune may be required to re-instate the channels, with the old version temporarily available on channel numbers 784 and 785.
Hochanda is also extending its broadcast hours from 7am to 7pm, to 7am to 10pm. As the channel time shares, the frequency move is likely to be required in order to facilitate the broadcast hours extension.
Additionally, I understand that Yesterday +1 is likely to be extending its broadcast hours to full time, but this is unconfirmed.