Euclidian-normalised differential source counts at 1.4 GHz in polarised intensity from our Lockman Hole observations (red triangles). Component counts from Hales et al. (2014a) for CDF-S (blue) and ELAIS-S1 (turquoise) are given for comparison. The solid black line shows the model prediction from Hales et al. (2014a). The other lines are from the simulations of O’Sullivan et al. (2008); the dashed black line gives the total polarised differential source counts, the dashed green line gives the FR I source counts, and the blue one gives the FR II source counts. The black dotted line represents the NGs, and the dot-dashed black line the RQQs.