This publication describes a relatively small excavation (by CAM ARC, now Oxford Archaeology East), whose size belies its significance. Incredibly, this is the first properly documented archaeological excavation in the core of Wisbech - an historic town long suspected to have preserved interesting medieval deposits. It fills a gaping void in previous knowledge of the character and quality of the archaeological remains in the town and represents an important first step in redressing the regional imbalance in published medieval port sequences, such as those of King's Lynn and Great Yarmouth.