Actually now called the United Reformed Church, but known locally known as the Old Independent Church or O.I.C which was its original name
The Church has been present in Haverhill since 1662.
The cache is NOT at the published coordinates.
At the published coordiates though you will find a memorial stone that will help you find the hiding place.
On the memorial stone there is a date Sept ab, 18cd
Use this information and N52 04.(b+d)(b*b)(b-b), E000 26.d(a+b)a to calculate the coordinates
Wheelchair accessible but will need help retrieving the cache
If you would like to add to the Church Micro series yourself then please look here
http://churchmicro.co.uk/
There is also a Church Micro Stats & Information page that can be found at
http://www.15ddv.me.uk/geo/cm/index.html