I'm probably gonna be at Holkham at the weekend, checking out a hillfort or two... Holme isn't a million miles from there, so I may carry on along the coast n' take a look if time allows.

If you can hold of a copy of the Proceedings of the Prehistoric Society Vol 69 2003, there is a mighty paper by Marl Brennard & Maisie Taylor on the excavations at Holme which also includes the second circle & the ? trackway.
It's a heavy duty report 84 pages.