At the University of Glasgow, we have been developing the swarm of autonomous micro-unmanned aerial vehicle (?-UAVs), as a part of team projects of the final yearproject design course: Aerospace Systems Design Project 4for our BEng in Aerospace Systems program. For our Singapore campus, where similar course is conducted, the platform chosen is the quadrotor. In this paper, we present the conceptual design, construction, flight test, swarm behaviour and lessons learnt.