Cosmological Constraints from the Kilo Degree Survey

I will present the latest tomographic cosmic shear measurements from the Kilo Degree Survey (KiDS), and the resulting cosmological parameter constraints. I will explore the sensitivity of the parameter constraints to the systematic uncertainties and improvements that come from incorporating overlapping near-infrared data from VIKING. I will also discuss the combined analysis of weak lensing tomography and overlapping redshift-space galaxy clustering from KiDS and the spectroscopic surveys of 2dFLenS, BOSS, and GAMA, with a focus on improvements to systematics mitigation and parameter constraints in standard and extended cosmologies.