St John’s has a well-equipped café area which can seat over sixty people. The café is open between 10am and noon every Wednesday and Saturday selling hot and cold drinks, and a variety of home made cakes and scones. All profits go to charity. At the Wednesday and Saturday café there is also a stall selling a range of bric à brac, DVDs, second books etc, and there is a welcome counter where you can purchase souvenirs and concert tickets.
During term-time the Wednesday café is staffed by pupils from Marshfields school, and during school holidays it is staffed by a different charity each week. The Saturday café is mostly staffed by volunteers from the church.