Pre-eclampsia is an important cause of maternal morbidity and mortality. It is a multisystem disorder of pregnancy characterised by new onset hypertension after 20 weeks’ gestation, usually accompanied by proteinuria. If a urine dipstick is positive for protein, the amount should be quantified: a protein: creatinine ratio ≥ 30 mg/mmol is abnormal. There should be a high index of suspicion for pre-eclampsia if there is biochemical disturbance consistent with the diagnosis or evidence of fetal growth restriction when plotted on a customised growth chart.