If it cannot decode UK spec NICAM sound then you still wont get stereo out of the TV via an AV amp. The only way would be to get the stereo sound out from a nicam video or dgital box.
Of course, I don't actually know it this model does or doesn't cope with UK NICAM!
Some european TVs will cope pretty much everywhere, but the UK is often different enough to make problems. Ask for the exact model number, the end suffix tells you the original country version. KV28FX20U is for Uk for example,
These days, however, some of the better TVs are multistandard, as it's cheaper to make a model for Europe, or the TV might have all the features inbuilt, but deactivated for certain countries.