St Peter upon Cornhill is an Anglican church on the corner of Cornhill and Gracechurch Street in the City of London of medieval origin. It was destroyed in the Great Fire of London in 1666 and rebuilt to the designs of Sir Christopher Wren. It is now a satellite church in the parish of St Helen's Bishopsgate and is used for staff training, bible studies and a youth club. The St Helen's church office controls access to St Peter's. More information on the Wikipedia page [1].