All Universal LNB cables in my box in question are going to the same dish.
I have recorded way more stuff at the same time as each other before than what I posted in my original post so it doesn't make sense that there's not enough free tuners to record ITV. If it was a polorization issue then wouldn't it prevent stuff being recording on that channel later in the day? Yet 4 hours after the failed recording I recorded This Morning on the same channel at 9.49AM and that recorded fine.
I looked at that thread you mentioned. When watching a channel if I press Up, highlight the service and look at the screen then I can't see the frequency and polorization as it doesn't show in the Magic HD Night skin.
I instead pressed up when watching a channel > Menu > Show Transponder Info > Tuner Settings Values. It says
"Frequency & Polarization: 11067 MHz - Vertical". I assume that's the correct info you need?
If there's any more tests you need me to do please let me know and I'll get them done straight away. Thanks