St Margaret Pattens is a Church of England church in the City of London, located on Eastcheap near the Monument. The dedication is to Saint Margaret of Antioch.
Wikipedia https://en.wikipedia.org/wiki/St_Margaret_Pattens
Address 14 Rood Lane, City of London EC3M 8AZ, United Kingdom
Coordinates 51°30'38.881" N -0°4'58.647" E