A 52-year-old man attends your GP clinic for review of his blood pressure. Over the past 6 months, despite adherence to lifestyle measures (reduced salt intake, weight loss, regular exercise, minimal alcohol), his correctly measured seated clinic blood pressures on three separate visits are around 150/92 mmHg. His absolute 5-year cardiovascular risk is calculated at 12%. He has no target organ damage and no diabetes. What is the most appropriate next step in management?