The London School of Economics is now offering a new Executive LLM program beginning in the fall of 2013. The program will feature intensive modules delivered over a time period of 3 or 4 years, and is designed for those who cannot take a full one year break from their work.
More details are available at the official site of the program. The application process page for the program notes a TOEFL minimum of 109 and an IELTS overall score of at least 7.5. The application itself will be ready in October 2012.