all three of which survive. By the end of the 11th century Botolph was regarded as the patron saint of boundaries, and by extension of trade and travel. This was apt as the church was close to the city wharves and also to London Bridge, which at the time of the church's construction lay slightly further east.

During the 15th century the church was extended to the south over an undercroft. On the south side of this extension, at the south-east corner of the enlarged