This is a bonus cache , there is nothing at the listed coordinates, you need to complete the "Jolly Holiday" Adventure Lab. (another MP theme) on the separate Aventure Lab ap, to collect the bonus numbers displayed in the 5 Journals after your answers have been submitted and use them in the simple formula below.This will have taken you in a journey of Breweries and pubs in Grove, Steventon, Abingdon finishing up in Milton.
The numbers you need are given to you after completing each stage but in this case the numbers are the same for the Grove and Abingdon locations so you can complete the Ad Lab later if desired.
Insert your numbers : N 51° 3A.BCD. W001° 1E. FGH Then go and pull yourself a "pint"!
A short walk from the Sandy and Black!