The cache is not at the posted coordinates, which is in the middle of Sherborne Old Castle! You need to complete the associated adventure lab to obtain the coordinates to this physical cache.
This is a bonus cache for completing the Adventure Lab Cache "Sherborne Historic Sites". Although not required, please upload any (non spoiler) photographs from your adventure and tell all about your experience in your Lab Cache log. Your adventure can begin after downloading the Adventure Lab app from Groundspeak.
To find this adventure lab cache, you will need to download the Adventure Lab Cache app and scan the link below:
https://labs.geocaching.com/goto/sherbornehistorcbuildings
or use the QR code:
You will have noted your answers from the Adventure Lab which you will need for the final coordinates:
From Lab 1 completion message, A
From Lab 2 completion message, B
From Lab 3 completion message, C
From Lab 4 completion message, D & E
From Lab 5 completion message, F
Final Coordinates are N50 5A.BCD W002 3(D-E).DFA
Checksum for all digits = 43
A special tool is required to open the cache and if you have been shopping, you've probably got what you need. Please do not force the box open.
You are looking for a camouflaged 140 ml clip lock box. Parking coordinates are given in the last stage of the ALC.
The lane leading to the cache can be a bit muddy at the beginning.
PLEASE TAKE GREAT CARE WITH GEOKIDS AND GEODOGS WHEN CROSSING THE MAIN ROAD