Due to its geostrategic status of retaguardia during the Spanish Civil War, the Valencian Country became one of the republican areas hosting the largest number of refugees, including many children. The Republican State was completely unable to meet the challenges arising from this demographic and health crisis and called for help. One of the first transnational humanitarian agencies to respond was the UK Religious Society of Friends, better known as the Friends Service Committee or simply the Quakers, a dissident religious community founded in England in the 17th century. During the Civil War, the quadays launched numerous humanitarian initiatives on the two opposing sides, enabling agricultural colonies, workshops, canteens and hospitals. This work analyses in depth the child hospital that Quakers set up in Alicante in September 1937 and which was subsequently transferred to the municipality of Polop de la Marina. We will focus on issues such as the location and administration of the health institution, the type of patients who attended there, the healthcare staff working there, the evolution of the hospital throughout the war and its journey after the Franco victory, as well as the motivation for British volunteers to promote and implement this project. We will also rebuild the figure and trajectory of Manuel Blanc Rodríguez (1899-1971), a paediatrician unknown to the historiography, who took over the leadership of the British hospital.