PBS showed the first part last Sunday and I thought it was great and really well done. Reminds me of when I used to watch those Hallmark specials and remakes of The Secret Garden and A Little Princess when I was little.
You can also watch it online for a limited time if you're in the US. I think they already showed it in the UK: http://www.pbs.org/wgbh/masterpiece/twist/watch.html
Born to an unmarried woman who dies after giving birth, orphan Oliver Twist (William Miller) seems destined to slog through a dismal life in the workhouse. A rebellious cry for more gets Oliver banished, and ultimately lands him on the dismal streets of London. The young outcast finds refuge with Fagin (Timothy Spall, Harry Potter films) and his band of thieves before fate intervenes and puts Oliver in the hands of a kindly benefactor. But an evil far greater and much closer than Oliver could imagine threatens him and all those around him. Tom Hardy (Wuthering Heights) and Sophie Okonedo (The Secret Life of Bees) also star in this bold adaptation of Charles Dickens's moving story of a heroic young boy determined to find his way home.