Harrods Magazine is sent to Harrods' 55,000 reward customers and includes high-end advertising from brands such as Jaguar and Bloomberg. Editorial content spans Harrods' products, including food, beauty and fashion.
Key editorial staff, including publisher Beth Hodder and editor Deborah Bee, have moved across with the magazine near to the store's Knightsbridge headquarters. Ad sales were previously handled by Harrods.
Guy Cheston, director of advertising at Harrods, is understood to have made the decision.
The title is part fee-based and part ad-funded and copies are sold in-store, priced at £3.
Prior to River Publishing handling the account, it was handled by Condé Nast, publisher of Vogue Magazine.
River Publishing, headed by chief executive Nicola Murphy, numbers Weight Watchers and the Co-op magazine among its clients.