This is the bonus cache for the Godalming Stroll Adventure Lab.
The above coordinates will take you to the suggested parking. You will find the numbers you need for the cache as you complete each stage of the Adventure Lab.
You can find further detail about the smartphone app for Adventure Labs here: https://labs.geocaching.com. If you already have the app then search on nearby Adventures to find Godalming Stroll
The whole Adventure and this bonus cache should take you just over an hour to complete.
The bonus cache can be found at N51 11.ABC W000 36.DEB