The British Postal Museum & Archive is embarking on a licensing push having appointed Heritage Licensing as its agent.
The BPMA collections include images spanning the General Post Office (GPO) logo to the poster designs of the GPO public relations department.
The collections also include over 100,000 striking photographs detailing British life from the 1930s to the present day.
The firm is looking to launch into sectors including book illustrations, clothing design, toys and stationery.
As well as images, the designs for iconic street furniture including red telephone and pillar boxes, which have come to globally symbolise Britain, will also be made available.
“It’s exciting to be able to reveal further the remarkable treasures of our collections in this way," said BPMA director Adrian Steel.
"They are an important part of social and communications history we will be telling at The Postal Museum & Mail Rail when it opens to the public next year.”
Martin Pittaway of Heritage Licensing added: “I have had the privilege to work with many great archives and brands, however the BPMA has a truly unique offering of stunning posters, prints and photography but also some of the most iconic brands ever created.”