SEM imaging of hollow microfibres, fabricated using the coaxial electrospinning technique. 2500x magnification. Both random and aligned hollow microfibres have applications as MRI phantoms and in neural tissue regeneration. This work was supported by the EPSRC [EP/M006328/1] and the Wellcome Trust Institutional Strategic Support Fund [105610/Z/14/Z]. From the work of Dr Ian Wimpenny, Parker Group, University of Manchester.