[2] The church stands in an isolated position at the end of a private drive overlooking the River Lambourn, to the southeast of the village of Great Shefford.

[7] In 1958 there were plans to demolish St Thomas' but this was prevented by the Friends of Friendless Churches.

At the west end is a wooden bellcote with a lead roof.

[5] On the north wall of the chancel is an altar tomb to John Fettiplace, who died in 1524, and his wife Dorothy.

On the south side of the chancel is a Norman limestone pillar piscina.