What will I need to make my LCD digital color tv work in UK?

There are several factors that need to be taken into account. First, North America uses 110V while Europe is based on 230V power supplies. Many products will operate on any voltage between 100 - 260V but American products often are restricted to 110V. The only way to find out is to read the label on the equipment itself. It is possible to use a transformer to deliver 110V but they are not cheap. Second, the television signal is different between the two countries. North America uses NTSC at 60Hz and Europe operates on PAL at 50Hz. Again, many televisions will handle both but that cannot be assumed. Lastly, the tuners operate on different frequency bands so it is unlikely that a direct aerial connection will operate. So, it the television operates on PAL, has wide range power supply then maybe it will work in the UK. By the time shipping has been added to the overall cost, it is not likely to be worthwhile to bring a US television to the UK.