Relative difference between the lensing signal with and without the contribution of IAs and lens magnification. The IA contribution is modelled with A_IA = 1, which is a reasonable ‘worst-case’ scenario for the KiDS-Bright sample, and the magnification is modelled with α_d = 0.85 and α_d = 2.11, typical for GAMA-like lenses at a redshift of 0.21 and 0.36. Grey areas show the error on the data. We also show the changes to the galaxy-galaxy lensing and galaxy clustering signals if we change the two main cosmological parameters. The behaviour is only shown for the largest stellar mass bin, as the contribution to magnification and IAs is of the same order for all of them.