James Colmer Ltd. was a large department store in Bath. The store's origins can be traced to 1829 when Caleb Hornby opened a draper's shop in Union Street. The shop grew to become the largest department store in Bath. Branch stores were also established in Bristol and Taunton. All the James Colmer stores were later taken over by the department store chain Owen Owen.James Colmer Ltd. was a large department store in Bath. The store's origins can be traced to 1829 when Caleb Hornby opened a draper's shop in Union Street. The shop grew to become the largest department store in Bath. Branch stores were also established in Bristol and Taunton. All the James Colmer stores were later taken over by the department store chain Owen Owen.