A simple off-set multi needing a bit of stealth and light maths.
Start at the above co-ords and look for an illustration. Here you'll learn about a lad of AB years who started repairing bicycles. You'll also discover the address you're outside is C1 Longwall Street. Read on to see a sketch by J.H. John from 192D and someone 'at the wheel' in 191E.
Close by you'd find four men came to a sad end in 1FGH. An H on the wall to the right confirms the number :)
A=___ B=___ C=___ D=___ E=___ F=___ G=___ H=___
N51° 4B.E(F-A)9 W001°1(D-C-A).GH4
Cache safe, have fun, and enjoy some light education.