The fluids encountered in environmental and industrial applications are often endowed with restoring mechanisms which lead to the propagation of waves. When they propagate in a fluid, waves can interact with the fluid motion in a variety of ways. Crucially, it is a two-way interaction: fluid motion generate waves, but waves also force fluid motion. Because waves and flows often have very different spatial and temporal scales, and because they involve very different physical processes, modelling their interactions poses a considerable technical and conceptual challenge. The purpose of this Network was to address these challenges by bringing together a number of UK researchers with expertise in different aspects of the problem: mathematical modelling, numerical simulations, and laboratory experiments. Fruitful interactions took place during the four meetings organised by the Network. Each of these were attended by an average of 35 scientists, a good proportion of which PhD students and early career researchers and led to fruitful interactions including the development of several new collaborations.