Shear induced aggregation of a Pectin stabilised emulsion trapped at the air-liquid interface was studied in a Couette system by video enhanced microscopy. From dimension analysis, Brownian motion was identified to enhance the probability of bond formation. The characteristic time scale of aggregation was found to scale as tc \sim / rather than tc \sim 1/˙ as expected for orthokinetic aggregation. The structure of very large clusters showed strongly rearranged strands and fractal scaling for low ˙ and , analysed by density auto-correlation. At high ˙ and , the cluster was dominated by larger drops and no fractal scaling could be determined for the accessible length scales.