To allow for BBC Four to move to channel number 24 in Scotland, as per Ofcom requirements, many channels are about to change channel number.
On the 4th November (2020), all channels currently with a number between 24 and 54 inclusive, will move down 1 slot. Affected channels include ITV4 which moves from 24 to 25, and E4 +1, which moves from 28 to 29.
Additionally, as of 27th October, some channels move to a higher number. ITV Be +1 makes the highest move, from 97 to 57. Horror Channel moves from 70 to 68, which Quest +1 and Quest Red +1 also moving to 69 and 70 respectively (from 76 and 72).
As no channels are changing frequency, a re-tuned is not automatically required, although some receivers may need a full or partial re-tune to update the channel numbers.