This is a simple multi.
At the coords will be a sign on the farm building wall with a phone number.
To get the coords for the final cache use the phone number as
ABCDE FGHIJK
The final is located at...
N51 B D . (H-I) C (G-J)
E000 F (K-E) . (H+A) K (E-B)
The complete series including the splitter cache is approx 6 miles or 9.5km and should take a couple of hours, depending on your speed. The route is a mix of fields, footpaths and lanes, which does have some styles and hills to negotiate. Have fun out there!
To split the series into two parts would result in one 4 mile or 6.5km route and one 2.5 mile or 4km route.
Here is a link to all of the caches and types in the series...