Cube satellites are miniature satellites used for research purposes that have a wide range of applications; technology demonstration, science, educational tools or commercial industry. The cube satellite form factor ranges from one unit ‘1U’ to six units ‘6U’. A 1U CubeSat typically weighs around 1 kg, the structure is conventionally built using aluminium material. The study presents an alternative material for the cube satellite structure from the conception of the idea to analysis, fabrication and testing of the prototype. The study analyses the viability of composite structures for cube satellites and introduces the potential of High Tg, Prepreg Carbon Fibre Reinforced Polymer (CFRP) as it can drastically reduce the weight of the structure. Before fabrication, analyses were conducted for primary testing, which included structural analyses such as modal tests, static tests, random vibration analyses and impact tests. The fabrication method incorporates modern manufacturing techniques like 3D printing, laser cutting, numerically controlled oscillating knife cutting and other composite fabrication methods as well as other techniques like water-jet cutting, pattern and mould making and vertical machining centre implemented. The designed prototypes are validated by a set of tests as per standardised methods.