SADS UK works with schools, communities, offices, sports clubs, leisure centres etc., installing thousands of defibrillators and teaching CPR across the country. Lives have been saved as a direct result of the work of SADS UK. In addition, the SADS UK Big Shock Campaign lobbies Government to make defibrillators compulsory in all schools to help save young lives. When a cardiac arrest occurs early CPR and defibrillation is essential to give a person the best chance of survival.