The above co-ordinates are not for the cache, but for the first question (see below).
Although nothing remains of the original wooden Saxon building, the present Church shows clear signs of later Saxon architecture. The Tower, with its pointed arch, is Norman. The Cloister was added in the 16th century, so that parishioners from some distance away could rest & eat between morning and evening services.
Remains can be seen of an early font which was smashed by the Puritans in the Civil War. This bears signs of a lock to prevent the theft of Holy Water for superstitious purposes. Beneath is a 'Resurrection Stone' of immense weight which was hired out to prevent newly buried corpses from being stolen! The present font, of Sussex Marble, was first used on Lady Day, 1662, when the restored Charles II had reintroduced the Prayer Book and the ceremony of Baptism. The Lectern was presented in 1897 in memory of Alfred Lord Tennyson who lived nearby and was a regular worshipper at St. Laurence's.
You will need to answer some questions to find the co-ordinates for the cache.
Question 1 Go to N51 02.227 W000 39.828. You will find two military graves. Note the army number for A Chandler of Notts and Derby = ABC0. Now find the army number for E J Coombes of the Queen's = DE28.
Question 2 Go to N51 02.243 W000 39.817. There are a lot of Yew trees in this churchyard. How many are in an unbroken line? = F.
Question 3 By which door do you enter the church? If North then G=1, if East then G=8, if South then G=3, if West then G=5.
Now you can look for the cache at N51 02.DGB W000 39.EF(C-A).
If anybody would like to expand this series please do, I would just ask that you could let sadexploration know first so he can keep track of the Church numbers and names to avoid duplication.