Rathbone Greenbank Investments works with many other organisations and groups committed to ethical investment, or more generally to sustainable development and social justice, through membership, partnership, and sponsorship. These include the following:

UKSIF – the UK Social Investment Forum

UKSIF is the UK's membership network for socially responsible investment (SRI) and ethical investment. UKSIF works to promote and encourage the development and positive impact of SRI amongst UK based investors. Rathbone Greenbank Investments is an active member of UKSIF.