Gibbins House is led by Mrs Victoria Firth. Mrs Firth is supported by Miss Philippa Bradfield (Deputy Housemistress) and Ms Debi James (Day Housemistress). Mrs Firth lives with her husband and two dogs (Indie and Willow) and also teaches Biology (she has a degree in Conservation Biology from the University of Exeter and a PGCE from Cardiff Metropolitan University). When not in House or teaching, Mrs Firth enjoys traveling, swimming and painting.
During the week members of the teaching staff come over to assist the Housemistress. This gives the academic staff an opportunity to get to know the pupils better and it can also be a great help if a girl would like an informal chat about their subject. House Tutors for Gibbins are: Reverend Jonathan Beach, Dr Stan Fowler, Mrs Kim Hodge, Mr Giles Mason, Mrs Elizabeth Rothwell, Miss Laura Sears, Mrs Ruth Thomas, Mrs Elizabeth Thompson and Mr Roger Trowbridge.
Gibbins is home to St Mary’s LV Form. This is their first year of GCSEs. The girls are given their own study rooms for the first time in their school career. House is open throughout the day and evening so girls may come and study at any time when they don't have lessons. This encourages the girls to study more independently. Gibbins is situated away from the main school along with the other senior Houses.
Gibbins was opened in 1979 by Miss Gibbins who was Headmistress of St Mary’s from 1946 to 1972. In 2014 the kitchen and laundry facilities were upgraded and a new House Office was created as part of the redesign. Gibbins House now accommodates up to 63 Fifth Form girls in individual study bedrooms.