The cache is not at the published coordinates, but you will probably need to visit the coordinates before you can find the cache.
A simple offset cache but with an unusual twist. Take a seat at the posted coordinates and you'll see six numbers to complete the gaps in the final coordinates: N 51° _ _ . _ _ _', W 1° _4 . _ _ _'.
The cache is around 500m away, to the South. The final coordinates are through a kissing gate and are thus unsuitable for buggies, bikes, and wheelchairs.
Coordinates are provided for nearby off-road car parking, but there's plenty of on-road parking available too.
Congrats to Daffodilbob for the FTF!