Our Doubt Kills campaign gets a third wave

Our award-winning Doubt Kills campaign - which first ran in 2006 and again last summer - is currently enjoying a month-long reprise on the billboards, tube posters and bus sides of London.

As the majority of our users are based outside London, we nevertheless thought it a good opportunity to remind you of the core message of Doubt Kills, which is this: If you experience chest pain, call 999 immediately.

You can read more about this message, and hear from people whose lives have been saved by the campaign, on our special Doubt Kills website

There's also a free Doubt Kills podcast, an animation of what happens to your heart during a heart attack, plus an informative interactive quiz - and much more besides.