In the past, the GHS Parents Association has supported Blue Marine Foundation, Critical Care Campaign at Chelsea and Westminster Hospital, Over the Wall, Helen and Douglas House, Honeypot, Louis Dundas House, Auditory Verbal UK, the Roald Dahl's Marvellous Children’s Charity and The Whitley Fund for Nature. Every year, the Parents' Association also makes a donation to the Royal Hospital Chelsea.

This year the supported charity is the Katherine Low Settlement in Battersea. Last year the School Council shortlisted the charities who pitched for support and organised a ballot for the pupils to vote.

Cake days, Jeans for Genes day, the Poppy Appeal and Christmas Boxes are embedded in the School Calendar. Older children are allowed to propose a charitable enterprise, usually in response to a topical issue and to bring it to fruition such as raising funds for Grenfell victims, and more recently the victims of Australian Fires with a sponsored run.

Our children are recognised and applauded for charitable undertakings outside School through a community board.