Inside No. 9 - 3.5
✓ #21 cache within Oxfordshire by % favourite points (see Project-GC).
Cache is not at the posted coordinates. There is a puzzle to solve first.
The twentieth in a series of puzzle caches with the common theme being that they are all situated "Inside No. 9". The Chiltern Society's Footpath Map No. 9 that is…what else could that mean?!
The Puzzle
Assuming N 51° 3 & W 0° 5 see if you can make the shoe fit (separate larger images available in gallery).
Whilst the CO is a fan of the source material he appreciates that it is not everyone's cup of tea. There should therefore be no need to watch any episodes in order to solve the puzzles in this series, but it might help!
Congratulations to Sapphirites on the FTF!