I thought i would post again as i have found a fix for this.
I had mine tuned in to channel 10510 but recently it has stopped working. Below is a fix if you don't already have it.
Just in time for the game tonight.
To add ITV1 HD in STV or UTV regions you need to do this.
Press "Services" on the remote control (or from the Guide go to "Options" on the top menu).
Press the down arrow, and then scroll across to "Add Channels".
Press "Select" or the down arrow, to highlight the frequency.
Using the number pad on the remote, enter the following frequency: 10.832
Press the down arrow, and use the left or right arrow to change the Polarisation from V to H.
Check that the Symbol Rate is 22.0 and that the FEC is 5/6, and adjust if necessary.
Press the yellow button to Find Channels.
Once it has finished scanning, find & highlight one of the channels "ITV1 HD" (there should be two of them) and press the yellow button to store it, and then press Select to continue.
You can now view ITV HD by going to "Other Channels" within Services/Options (it's next to "Add Channels") & pressing Select to reveal channel ITV1 HD & then pressing Select again to view it.