When not in use the building is open to visitors every day so that they can quietly appreciate and explore the space in a way that Ms Bruce evidently didn't quite manage to do. It is a shame her visit didn't coincide with an event, as she might then have left with quite a different impression. There are several working churches in Sudbury, and having a so-called 'redundant' one dedicated to bringing people together in a way that doesn't rely on religious belief is definitely a positive thing in my book.
***Incidentally, Ms Bruce also suggests taking a stroll along Gainsborough Street, and turning 'left down a little alleyway' to Gainsborough's House. If you're coming from Saint Peter's (perhaps in rather a grumpy mood) then you might want to turn right into the alleyway instead of left, otherwise you'll only end up feeling even more cheesed off... But before you leave, stop at the water trough outside St Peter's and just imagine for a moment the white and black-spotted, silly deliciousness, of the 101 Dalmations (yes, the very same!) who stopped to have a drink there as they fled from the dastardly Cruella De Vil!