It was established in Leeds in 1996 by Phil Burgan, a former pharmacist, who remains CEO; it was named after his grandmother.

[1] The group has 27 care homes located in the United Kingdom and the Channel Islands.

[4] Historically, MMCG provided care for adults with autism or challenging behaviour.

[5] In 2012, a resident in a MMCG home was kept in a cold room, and was found to have a body core temperature of 25 °C (77 °F) when they died of hypothermia.

In 2016, MMCG pleaded guilty to breaking heath and safety rules, and was fined £1.6 million.