The parish church is situated at the junction of Stonard Road and Green Lanes in the London Borough of Enfield.

The church activities include community programmes and social action alongside worship and pastoral care.

Father Gallagher (whose Grandnephew was Dr Joseph Cassidy the former Archbishop of Tuam) originally came from the parish of Midfield, County Mayo in Ireland.

This was to be his last and dearest ambition achieved, for three years later on 11 December 1957, Fr Gallagher finally passed from this world with his work complete.

The church started an amateur dramatic society, Saint Monica's Players (SMP), in 1958 that continues to perform musicals across Enfield today.

Situated in the traditional south west corner of the church, the Sacred Heart Chapel was an anonymous gift from an early parishioner.

Two angels bear parts of one of Jesus' revelations to Sister Margret Mary in the 1670s: 'Behold this Heart' on the left and 'Which has so loved men' on the right.

The statue of St Joseph, holding a lily, the symbol of the Christian virtue of chastity, is adjacent to the Sacred Heart Chapel.

The frames are long gone now and set against the plain walls of the Church, the individual images tell the story of Christ's crucifixion in a simple and dignified way.

The large wooden crucifix with an expressive, carved Christ (origin unknown) has been hung in various places around the Church down the years.