Is your live TV viewing ok? If it is, you have possible signal issues and should try one precautionary reboot. If symptoms persist, check for known area faults on 0800 5610061 before then reporting your fault.
If live TV is ok, try pausing for 30seconds and watching delayed. That's using your hard drive and is effectively a recording.
If you have signal issues - C4-HD shares a broadcast TX with ITV-HD, C4-SD & C4+1, all should be similarly affected.
If you have hard drive issues, all recordings & paused programmes will be affected, regardless of channel.
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