Sebastopol Cross and base, approximately 3 metres to east of vestry of Church of St Michael

Sebastopol Cross and its base, located approximately 3 metres east of the vestry of the Church of St Michael, is a memorial dating from the mid-19th century and earlier. It is constructed from ashlar stone and wrought iron. The memorial features an octagonal stone base made up of five steps, which supports the Sebastopol Cross. The cross itself has a globe at its base, with arms that are perforated and end in quatrefoils. Each angle between the arms of the cross has three spikes. The cross is enclosed by a low rubble wall topped with ashlar coping, which supports plain wrought-iron railings. The bars of the railings have hammered ends, and the corner posts feature fimbriated finials.

The cross was originally located on the roof of the chapel of the White Barracks in Sebastopol, taken by British forces during the sacking of the town in the Crimean War in 1854. General Sir Charles van Straubenzee, who commanded a Brigade in the Light Division during the campaign, brought the cross back to Spennithorne. It is now mounted above the van Straubenzee family vault, with their names engraved on the sides of the stepped stone base.