Patients who owe their lives to the work of the air ambulance paramedics were among hundreds of runners who took on the heroes run at Holdenby House today. Around 400 people signed up for either the 5km or 10km run around the Northamptonshire stately home in aid of the Warwickshire and Northamptonshire Air Ambulance The run was due to take place in April but was delayed because of poor weather.