If you were doing 85 indicated it's probably only 77 to 78 actual. In a 60 limit I would expect 3 points and £60 fine, especially if it was the middle of nowhere. I guess it depends if they thought it was dangerous driving or not...
just wait for the NIP and see what they will offer. IF it's the 3 points and £60 then I would take it.
a nervous 2 weeks ahead..