Reform Judaism (formally, The Movement for Reform Judaism, and known as Reform Synagogues of Great Britain until 2005), is one of the two World Union for Progressive Judaism–affiliated denominations in Britain. Reform is relatively traditional in comparison with its smaller counterpart, Liberal Judaism, though it does not regard Jewish law as binding. As of 2010, it was the second-largest Jewish religious group in the United Kingdom, with 19.4% of synagogue-member households.