Good locations for AED placement include police vehicles, airports, railway and bus stations, sports venues, GP surgeries and dental practices, health clinics, gyms, shopping centres, supermarkets, theatres, workplaces, schools, places of worship, and community centres. In the UK, AED locations can be found using The Circuit — the national defibrillator network (thecircuit.org.uk) — and through many local ambulance service mapping tools. The British Heart Foundation and St John Ambulance also provide guidance on siting and registering AEDs. Since the majority of out-of-hospital cardiac arrests occur in the home, some people at high risk may also consider purchasing an AED for home use.