Impact investing is an industry that's grown massively in recent years. So much so, in fact, that the Global Impact Investing Network (The GIIN) estimates that there are now $228 billion in impact assets, while other estimates put the same number in the trillions.

With more and more big name investors getting involved in impact investing, has the movement now gone mainstream? And, if so, will the trend last?

In this podcast we seek answers to those questions. We speak to:

- Abhilash Mudaliar, Director of Research at the Global Impact Investing Network

- James Purcell, Head of Alternative and Sustainable Investments at UBS

- Fran Seegull, Executive Director of the US Impact Investing Alliance