The remains of the sedilia and piscina near the altar at St Giles-without-Cripplegate Church in the Barbican estate, London.
The tiles in the arch are Roman.
Date: 15th Century?
https://en.wikipedia.org/wiki/St_Giles-without-Cripplegate
Photos taken in October 2019 with a Sony a6000 and processed in Reality Capture.