These Regulations provide for the registration of marriages and civil partnerships in which one or both parties have obtained a full gender recognition certificate under the Gender Recognition Act 2004 (c. 7). Changes made to the Gender Recognition Act 2004 by the Marriage (Same Sex Couples) Act 2013 (c. 30) enable couples to remain married when one or both parties obtains a full gender recognition certificate, and to remain in a civil partnership when both parties obtain a full gender recognition certificate.