This cache will bring you close to the Manchester office of GCHQ
No not the HQ of GeoCaching... the Goverment Communication Head Quarters.
GCHQ was originally established after the First World War as the Government Code and Cypher School (GC&CS) and was known under that name until 1946. During the Second World War it was located at Bletchley Park where it was responsible for breaking the German Enigma codes.
You can learn more here.
Stealth will be required. You may well be being watched 😳