Standing on the Island’s highest point, at 20 ft above sea level, St. Mary’s Church became the central church on Hayling after flooding claimed the priory church, along with much of the southern edge of the Island in the 13th or 14th century. Built mainly in the early thirteenth century from imported stone, the church gained the addition on a timber porch in the fifteenth century and received significant interior restoration and alteration during the reign of Queen Victoria.

Although the original stocks and whipping post that were housed in the church yard have now been removed to Havant Museum, St. Mary’s church still has many features worthy of note. The most noticeable of these is the ancient yew that dominates the church yard, believed to be one of the oldest in the country with a girth of some nine metres. Although estimates as to its age vary, they range from over a thousand to nearly two thousand years old.

Carved into the outside walls of the church four sun dials can still be seen by the keen observer. Used for timing the frequent church services in the days before mechanical timepieces, these now receive too much shade from the surrounding yew trees to be of any functional use.

In 1803 the three bells in the belfry, once impressed “1324” were replaced by a tolling bell.
Inside the church notable features include a stained glass window depicting the Tree of Jesse and two interesting fonts. The first font, a Saxon stone basin with interlacing patterns, was excavated from a site near the vicarage in the nineteenth century. The second is a Norman font of a much squarer, less intricate design.