A charity hived off some of its core activities to a private company set up by the trustees. This was ostensibly to reduce risk but that could have been addressed by setting up a trading subsidiary of the charity as a limited company.
The company has traded profitably for several years, income going to the owners / directors (also trustees of the charity) that should have gone to the charity.
How can I best assess the loss to the charity (all I have for the company are abbreviated accounts from the Companies House website) ???