I wanted to add a cache to the 'Victoria's Post Box' series, but as I couldn't find a qualifying post box, I had to settle for George VI instead.
Looking at the post box information dated 22/05/2024
A = The hour of the latest collection time
B = The difference in the number of letters in the name of the two post offices mentioned
C = The first digit of the minutes of the later collection time
The Saturday collection is D hours earlier than the Monday to Friday collection
The four answers added together should total 11
The final cache is ABC meters away, on a bearing of D(A+D)C degrees