Consultancy charges

I’m currently doing a unit at university that involves setting up a theoretical consultancy, and I am looking for information about charges. So if any can come up with some UK ballpark figures, hourly rate, fixed fee stuff like that. It doesn’t have to be that accurate just something that we can work too.

It depends on how successful the consultant has been in the past, how mnay years of experience they have anjd their skill set - all kind of things like that.
I’ve heard of anything from £150 to £400 per day (UK based) and up to £1000 a day abroad.

There is no hard and fast rule, unfortunately.