The 19^th-century is considered as a crucial epoch in British history, which witnessed profound social upheavals that spanned economic, political, and cultural domains. This paper examines the 19^th-century art market through the perspective of Agnew’s Gallery in Britain. The gallery demonstrated precise market forecasting abilities by discerning the tastes of various social classes, reflected in its adept procurement, sponsorship, and copyright acquisitions. Thomas Agnew focused on acquiring watercolor landscapes of the English countryside, while William Agnew expanded the gallery’s inventory by securing aristocratic collections. Furthermore, it highlighted significant shifts in artwork themes and diversified profit strategies within the art market, highlighting the gallery’s pivotal role in adapting to and shaping the evolving landscape of artistic creation and commerce during this era. Simultaneously, William Agnew, as both an art dealer and Member of Parliament, expanded the gallery’s clientele and encouraged middle-class art consumption. By combining cultural, political, and economic influence, he positioned Agnew’s Gallery as a key player in the 19^th-century art market, mirroring the impact of Victorian social structures on art and collecting trends. The gallery’s auction and exhibition initiatives provided convenience for the emerging middle class to establish collections and assisted numerous British Indigenous artists, even accommodating the artistic interests of the lower classes. Throughout the gallery’s developmental journey, the macro-level business strategies of the Agnew family unveiled the influence of Victorian societal structures and class dynamics on trends in artistic creation and collection within the art market.