This is a known issue that is affecting some TalkTalk youview boxes. YouView were looking into this and an issue was found with the broadcaster and a solution was being sought.
Since Youview closed their forum no updates can be found for this. Perhaps @Karl-TalkTalk has an update.
The advice was to use +1 channels as these are broadcast on different muxes, but you seem to have an issue with E4+1, so that's not an option for you.
You will unfortunately need to to live with this until a solution is rolled out.
In the meantime your best option is to use the All4 catchup app.
Please remember to mark Solved Posts with Best Answer. Doing so helps other customers and saves TalkTalk's Support Team time by only looking at unsolved topics. Thanks, Steve (a fellow customer).
