Age Concern England has appointed business and property strategy firm Corpra to increase the charity's income from its network of shops.
A new format has been piloted in five stores and the firm will manage the roll-out of the new look in all of Age Concern's 130 stores.
Andrew Vale, head of retail operations at Age Concern England, said: "Our retail portfolio represents a major income stream for us, as well as being a very visible symbol of our presence in the community. Corpra's understanding of the issues we face as a charity retailer has helped us define what makes a profitable store."
Corpra has previously worked with Cancer Research UK and HFC Bank. The charity is seeking to attract volunteers and extra income from the partnership.