It is believed that there has been a church on or near this site from about 630AD. The origins of the church that you see here date to Saxon times being built around 1000AD. When being constructed, flint and tiles were taken from an adjacent Roman pharos (lighthouse) to help build the walls. These tiles can still be found in the walls today. Over the years the church has been through many cycles of falling into disuse and restoration to what you see today.
It is amazing that a church like this, in its position is still in such good shape. With Dover being an important strategic location during World War 2 the church and the surrounding castle would have been easy pickings, but due to it providing a very visible and useful way-point marker on the way to London it was spared.