A variety of young budding engineers from across the UK and overseas will be challenged to design, build and operate an Unmanned Aircraft System (UAS) in a humanitarian aid mission as part of the Institution of Mechanical Engineers’ annual challenge. The competition, which is now in its fourth year, has been growing steadily since its launch, when twelve teams took part. This year, twenty-five teams will compete, including 4 international teams and a team from the University of Bath, which was crowned winner of the UAS Challenge 2017.