Asphaltenes are the heaviest end of crude oil and are responsible for a multitude of engineering challenges. They can precipitate from the oil, depositing, blocking pipelines and fouling refinery equipment. They can also alter the wettability of an oil reservoir, reducing its productivity and can stabilise unwanted oil-in-water emulsions. Asphaltene molecules in crude oil aggregate together, forming loose, fractal aggregates. It is hypothesised that these aggregates are themselves built from denser “nanoaggregates” formed from stacking of the disk shaped molecules. In this experiment we will use combined small and wide angle neutron scattering to help understand the structure of the asphaltene molecules within the aggregate. The results will be compared directly with computer modelling approaches which can provide a more complete understanding of asphaltene aggregation.