M&S Money staff offered their services to help the archaeologists working on Chester's Amphitheatre excavation.
The offer was made as a key part of their company's Corporate Social Responsibility programme.
Several M&S Money employees assisted the professional archaeologists in excavating and recording areas of the site in order to find out more about its Roman and pre-historical past.
Community Archaeological Officer Jane Hebblewhite said: 'The work we do is on behalf of the community. This is everyone's archaeology.
'The enthusiasm M&S Money staff have shown when working with us has been very much appreciated.'