Now try to obtain some coords from this:
Water Music
The Rocket
Gentle Shepherd
The Window Cleaner
Turned Out Nice Again
“Because It’s There”
The Mill On The Floss
UK’s Shortest In Office PM
Leaning On A Lamppost
“’er Indoors”
Father Of The Railways
My Sweet Lord
Careless Whisper
Very dense tree cover at GZ so cache is within 7m of coords.

While you're here, take some time to admire the wonderful carvings in the gallery