Part of the Winterslow Welly Walk (a buggy friendly geocaching route).
You are looking for a small cylindrical geocache container which is covered in silver/grey duct tape.
The geocache is not in any of the adjacent fields. These typically have livestock in them.
This cache is part of the Winterslow Welly Walk which is a 4.5mile loop which can be started from a range of locations (the park is probably the best place to start/finish).