Civil partnerships were initially introduced in 2004 as a segregated form of union available only to same-sex couples, and it remained in the British law even after same-sex couples were legally permitted to marry 10 years later. However, the UK government was forced to open them up to all couples after mixed-sex couple Rebecca Steinfeld and Charles Keidan proved in the Supreme Court that same-sex couples had two options to register their relationships and straight couples had only one, so it was not a complete marriage equality. The first straight civil partnerships took place on New Year’s Eve, December 31, allowing straight couples to enter a legal form of partnership. Steinfeld and Keidan were among the first couples to enter a civil partnership, attending a registration ceremony at Kensington and Chelsea Register Office. Other mixed-sex couples – including Cathy Brown and John Grisswell from Derbyshire and Mary Ann Lund and Gareth Wood from Market Harborough – entered civil partnerships the following day.