Guy's and St Thomas' Charity is an independent non-profit foundation based in London, United Kingdom. Founded in 1993, the foundation is committed to radical innovation in health and healthcare through financial and other support, leading to a sustainable change in Lambeth and Southwark. The foundation is governed by the Board of Trustees.Guy's and St Thomas' Charity's investment portfolio is valued at over GBP921.37 million, with investments in domestic and international equities, private equity, cash, and absolute return.