Sadly nowadays, except for services, it mostly seems to be kept locked. This a shame as the inside has many fine features including a 13th century font, several interesting memorials and a group of Pre Raphaelite stained glass windows designed by Henry Holiday. A detail from the east window (Madonna and child) was used in 2009 as a Royal Mail Christmas stamp.
Being a letterbox cache there is a clue provided to guide you from the posted co-ordinates to the final cache location.
At the posted cordinates turn so you are facing the main road. Exit the carpark by the left hand exit. Turn left and walk approximately 50 paces until you come to a footpath sign (a bit delapidated at the time of writing). Follow the footpath straight across the field until you come to a line of trees. The letterbox cache is hidden at the base of the second tree you come to. Please be sure to tuck away well after signing the log and taking an imprint of the stamp. I have found (by trial and error) that I get the best stamp print by gently tapping the inkpad against the stamp a few times to ink up the design. Then, after a few seconds pause, I gently but firmly press the stamp onto a thick paper or card, for two or three seconds to give the ink time to transfer to the paper, making sure that the paper has a solid object behind it (such as a book) for support. Mind you I still get a few dodgy imprints, and that's doing it at home. So anyone with any sure fire tips for a good imprint feel free to let me know.
In case the idea of letterboxes and clues are not to your taste as an alternative way of getting to the final location you can find the memorial pillar to the Kidman family in the churchyard at the waypoint co-ordinates N 52 40.502 E 001 40.081 and put the following numbers into the cache co-ordinates of N 52 40.ABC E 001 40.DEF.
Leonard Arthur Born Nov 2A
Frederic Died 19BC
Kate Maud Died DE58
Mary Ann Born 184F
Parking is available at the co-ordinates in the car park.