The following will take you to an appropriate place:
TQ6112065445
TQ4802424167
SU5098558920
SO7192027092
SO7915788537
TM3412287600
SO8025587582
ST1525033340
SZ5737088353
TL7587415975
SO3725578815
TQ1491827282
ST3280006725
SP8166538680
TL9433725677
And perhaps once you know what you're looking at, someone can
explain why I couldn't find any north of Shropshire? Plenty of the
same variety but not in the same style.
The cache is a vitamin pill pot.
You can check your answers for this puzzle on
Geochecker.com.