A bit more research brought up the quote below which is specific to the Wales Liverpool area problem of rejecting the Welsh Tx at Moel-y-Parc. I suspect you may have already found this but here it is.
"The Welsh channels are located between channels 42 and 52, while the English channels are between 54 and 62, so when your Freeview box does a scan it picks up the Welsh channels first and stores them in the preferred channel numbers on your box (1=BBC1, 2=BBC2, 3=ITV1 etc), while the English channels have probably been stored as duplicates, starting from channel 800 or 801.
The way to get round this problem is to do a complete retune of your Freeview box. There are two ways to do this depending on how your box works. If the box displays the channel number that it's scanning on screen while it's doing the scan (starting from channel 21 up to channel 68), then the easiest way of doing it is to unplug the aerial from the back of your Freeview box, start an automatic scan, and when the scan reaches 53 then plug the aerial back in so that the box can pick up the English channels but will already have scanned past the Welsh channels without registering them.
If you can't do that, then a more tedious way round it is to do a complete automatic scan with the aerial unplugged, so that your box is left with no channels registered at all, then plug in the aerial and then do a manual scan of each of channels 54, 55, 58, 59, 61 and 62 (54 has the HD channels from Winter Hill, so if you haven't got a HD TV then you can start scanning from 55)."
Probably my last word!
Tony
