It is the only Catholic Church in London served by Capuchin priests and Historic England said that its "classical styling of the tall entrance arches and the landmark campanile are powerful features in the street scene.

"[2][3] In 1867, a Capuchin priest, Fr Maurice started a mission in Erith for the local Catholic community.

Later a site was bought on West Street, where St Fidelis' Church, a school and presbytery was built.

On 9 September 1962, the foundation stone was laid by the Bishop of Southwark Cyril Cowderoy.

The church was designed by the architectural firm Archard & Partners and construction work was done by H. Friday & Sons, of Erith.