It is in the Gothic Revival style and is a Grade II listed building.

[3] In the early 1880s, an Italian priest, Fr Joseph Clemente, became the chaplain at St James' School in Baylis House.

With others, he raised funds and bought a disused warehouse and stable on Herschel House.

In 1908, thanks to a donation from the superior of the Bernardine Cistercians of Esquermes attached to St Bernard's Catholic Grammar School in Slough, in memory of her parents.

It was blessed by Pope Pius X and was originally designed to stand at Westminster Cathedral.