A 55-year-old man attends your general practice for a routine review. He is a non-smoker with a BMI of 31 kg/m² and no history of cardiovascular disease, diabetes or chronic kidney disease. On three separate occasions over 3 months, his blood pressure has been around 150/95 mmHg despite lifestyle advice. His absolute 5-year CVD risk using the Australian risk calculator is 13%. What is the most appropriate next step in management?