All3media International has made new hires at its London headquarters. Sonja Underwood has been hired for the role of head of Marketing. Underwood will work with Rachel Glaister, EVP International Brands & Press, to lead the international marketing team. Kate Potter joins the Commercial Development team as insight manager, where she will support the all3media International sales team. All3media has also hired Laura White as Scripted Acquisitions Executive, where she will continue to develop the company’s catalog.