Objective: To calculate the cost of angina pectoris to the UK National Health Service (NHS) in the year 2000. Methods: Calculation of the cost of hospital admissions, revascularisation procedures, hospital outpatient consultations, general practice (GP) consultations, and prescribed drug treatment. Results: 634 000 individuals (1.1% of the UK population) consulted GPs 2.35 million times, costing £60.5 million. They required 16.0 million prescriptions (cost £80.7 million) and 254 000 hospital outpatient referrals (cost £30.4 million). There were 149 000 hospital admissions, 117 000 coronary angiograms, 21 400 coronary artery bypass operations, 17 700 percutaneous coronary interventions, and 516 000 outpatient visits, at a cost of £208.4 million, £69.9 million, £106.2 million, £60.7 million, and £52.2 million, respectively. The direct cost of angina was therefore £669 million (1.3% of total NHS expenditure), with hospital bed occupancy and procedures accounting for 32% and 35% of this total, respectively. Conclusions: Angina is a common and costly public health problem. It consumed over 1% of all NHS expenditure in the year 2000, mainly because of hospital bed occupancy and revascularisation procedures. This is likely to be a conservative estimate of its true cost.