This is one of my favorite churches in the whole world. It's not big or fancy and that is why it's inviting. It feels like your home parish when you attend services there.
We go to London at least 3 times a year and always go to church there.
See my review under dining for Cafe in the Crypt.
There is a market here on the side of the church but it is not to good.
But take the time to visit the church.