For all other users, the Hydra Foundation, under its trading entity Critical Simulations Ltd, charges for consultancy to clients who wish to have use of the system and methods.  This charge covers accrediting facilitators, working alongside the client to develop their first scenarios and training their development teams to create and deliver Hydra exercises.  At the end of the consultancy, the client is able to operate on their own without further costs.  Sometimes clients ask the Foundation Team to continue to support them, however there is no obligation to do so. Jonathan Crego has invested £3 million into the development of the tools and the costs for continued development and running costs for the Hydra Foundation, are generated by charging for services.