UPDATE: Confessions are heard at St Mary's from half an hour before each Mass until the time the priest must prepare for the Mass. That is from 10:30am and from 5:30pm on Sundays, from 11:40am Monday to Friday, and also from 10:10am to 11:45am on Saturdays. Confessions are normally made anonymously, behind a screen in the memorial chapel (on the left as one enters the church from the porch).
It is sometimes difficult to know the ways one has sinned and how to make the most of the Sacrament of Confession. As well as making Fr Tim Finigan's guides to Confession available in the narthex (links in Confession and Saving Lives), we have now added a helpful Q & A from the Baltimore Catechism (as in the photo below--and the JPEGs at the bottom of this post, or here for a link to a pdf).
Meanwhile, the number of people coming to sacramental Confession at St Marys has seen a gradual increase since the FSSP arrived in Nov 2015. The graph below shows obvious peaks at Christmas and Easter. But if you have not been for a while, do not wait until then--God loves to forgive!