This little church is Norman one which built after the Crusaders returned from the Holy Land. There they had seen the Church of the Holy Sepulchre which Constantine had been built over the empty grave of Jesus Christ in the 4th century.

This style church is found all over Europe but England only has 3 of these left.

Here is a picture of what it looks like from the outside but I also took a video of the inside of the church. To take the video, I stood in the exact center of the original nave of the church and beginning at the stained glass window in the 14th/15th century chancel, I turned in a slow circle. You really can see that this church is round!