There are two mature yews in the churchyard and I sensed a spring or stream nearby but didn't find it on this occasion.
The little church has recently been awarded a £100,000 grant from English Heritage and the Heritage Lottery Fund to repair and replace the hand-made roof tiles which were designed by architect William Butterfield in the 1860s.
Thank you to Caroline (and Millie, the dog) for showing me this atmospheric and hidden little corner of Swindon's history.