In the 12th century the wooden parish church[citation needed] of Upton was replaced with a flint building.

[citation needed] A 13th-century Italian allegorical image of the Trinity – God Father, Son and Holy Spirit – survived and was reassembled in the restoration of the church.

St Laurence's "ivy-mantled tow’r" was a well-known landmark housing a curfew bell that "tolls the knell of parting day" across the fields of Eton College.

He, his wife and his grandson are all interred in a family vault at the base of the tower, and there are commemorative plaques on the wall nearby.

In 2001 a generous bequest allowed St Laurence's to install a set of stained-glass windows to commemorate Herschel and his discovery.