Social Investment Business

Social Investment Business (SIB) is one of the UK’s largest and longest-standing social investors, founded in 2002 (originating as the Adventure Capital Fund) and formalised as the Social Investment Business Group in 2009. It is a registered charity and trading company focused on using finance to build stronger communities and a fairer society by providing loans, grants, blended finance, and tailored support to charities and social enterprises across the United Kingdom. SIB uses repayable finance (loans and equity-like investments) alongside grants to help mission-driven organisations grow, become more sustainable, and deliver measurable social impact — for example in areas like housing & h...