More than four in five investors (84%) under-estimate the cost of investing and 13% are completely in the dark about the fees they pay, according to a new study by a Financial Planning-based wealth adviser.

The founder of the Platforum has laid out her long term plans for her new investment website, saying she wants to break down the "mumbo-jumbo" for the layman investor.

The founder and managing director of the Platforum has quit, it has been confirmed.