Thank you Erika_K (employee) but this is a boilerplate reply I've read elsewhere on the forum.

To make it slightly more helpful, you can extend your answer by being very specific about which Detail Type (DT) I should select for "Employee Training Costs" because in my opinion none of them fit.

Next, let me say that the boilerplate did not answer my specific point about what benefit these bring to the UK environment? Or, if that is too difficult, why it is not possible for the company's qualified accountant to edit or amend the list of DTs?

Go on, convince me that they have a purpose and add benefit to your users.