Wide and deep surveys with the Square Kilometre Array (SKA) radio telescope will see the large number density of resolved galaxies over large areas necessary for cosmology with weak gravitational lensing. These surveys will be competitive with other “Stage IV” dark energy experiments taking place at optical and near-IR wavelengths with Euclid, LSST and WFIRST. In addition, by having radically different systematics to other weak lensing surveys, the SKA provides a unique opportunity to use cross-correlations to form constraints which are accurate and robust. This will not be easy, however, as significant developments will need to be made in the analysis of data from radio interferometers in order to be able to make fast and precise galaxy morphology measurements. I will present a brief history of weak lensingn in the radio band and describe the progress of the SuperCLASS survey on the e-MERLIN telescope, the UK’s SKA pathfinder. This survey over 1 square degree of the Northern sky provides multiwavelength high-resolution coverage, useful for both weak lensing and exploration of the radio-optical properties of high redshift (z>1) starforming galaxies. I will show how, by using SuperCLASS, proposed JVLA surveys and extensive simulations, we will develop the sophisticated data analysis techniques necessary to fully exploit the data which will come from the SKA and create potentially our best constraints on dark matter, dark energy and modified gravity models.