Site: St Monica's church and priory (1 memorial)
N1, Hoxton Square, 19, St Monica's Priory
This building seems to be the church so we are not sure where the priory is. We have read that it survived the Blitz. Satellite view shows the roof of the church stretching a long, long way back so perhaps the back section is the priory.
Ian Visits has photos of the interior of this church showing the magnificent Gothic-inspired frescoes designed by E. W. Pugin and revealed in the 2013 restoration.