St. Mary's - Ewell
St. Mary's Church occupies a large site in Ewell village. The co-ordinates will take you to the entrance, where you may be able to park. Then you must find the date that the porch was erected. This will give you values for ABCD. The cache can be found by using the following, simple sum. N51 (2B+3).C,B,(D-3): W000 (2D-2).(D-A),(A+A),C. The cache is a short walk from the church.
Some stealth may be required to retrieve the cache. Rating reflects the difficulty of puzzle and find. GPS was hovering around 24 feet, there is lots of green at GZ, so a clue is given below, if you need it.
The cache has a log book but no pencil.
If any body would like to expand to 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