There does not appear to be an official national UK registry or map providing a comprehensive resource for locating automatic external defibrillators that are available for public use.
Currently locators are provided by a number of sources including both public and private sources.
When an automatic external defibrillator (AED) is placed such that it can be used by the public it should be registered with the ambulance service for that locale. Usually the AED’s case will then be given an id that should be associated with it. If the device is required any person wanting to use it should call 999 and then quote the code. If the case is protected by a coded lock the unlock sequence will be given whilst professional help dispatched.
Locator Maps and Lists
On locator maps, AED’s that are available to the public 24×7 are usually marked in green, whereas AED’s not 24×7 are in red
Open Source Map – research project run by Dr Robert Whittaker
Defib Tracker – covers UK, but predominantly West Midlands
Minutes Matter – Underused and map is rather sparse
GoodSam App – No online map, but they say they have the UK’s and worlds largest registry of AED’s which is
East of England Ambulance Service – spreadsheet