In 2004, the Institute of Marital Studies expanded by taking over some of the functions of London Marriage Guidance and enlarging its range of services beyond marriage to include couples. In recognition of this, it changed its name to the Tavistock Centre for Couple Relationships (TCCR). It had already separated from the TIHR 1979, becoming an independent company operating under the overarching charity the Tavistock Institute of Medical Psychology.