Had the same problem with my AIW 9800 SE when I got it the other day. After doing an "Exhaustive search" it found 7 channels but when i select them I got a brief flash of the channel, then white noise. I found though, that when I did the other search "in urban areas" as an additive search, it found all the channels and they operate correctly, so you might want to give that a try. Also make sure you have "antenna" and "UK" selected.

Good Luck
Howard.