Where the information comes from
Every page is based on published UK guidance and public health information from:
Each page lists the sources it’s based on at the bottom, with the date it was last updated. Where we quote a figure, we say who it comes from.
No clinical review, so no opinions
This site is not written or reviewed by a doctor or nurse. For that reason we don’t offer our own medical opinions. We set out what official guidance says, in plain English. Where guidance is unclear or depends on the person, we tell you to ask the 999 call handler, 111, your GP or a pharmacist.
Built to err on the side of safety
Whenever there’s doubt, the site tells you to call for help. The 1-minute check and Emergency mode are deliberately cautious. They will sometimes send you to 999 for something that turns out not to be serious. That’s intended.
Plain English and accessibility
- Short sentences, everyday words, and medical terms explained in the glossary.
- A large-print easy read version and the key emergency advice in five other languages.
- A font designed for people with low vision, high-contrast colours, a dark mode, and pages that work with screen readers and without a signal.
Keeping it up to date
Every page is checked against its sources at least once a year, and sooner when major guidance changes, for example new resuscitation guidelines. The “last updated” date on each page shows when it was last checked.
Advertising is kept separate
- Advertisers, including Google, have no influence over what we write.
- We don’t publish sponsored articles, paid links or product endorsements.
- Adverts are clearly labelled “Advertisement”, and only appear on information pages, never on the emergency tools.
Corrections
If you spot a mistake, please email hello@chestpain.org.uk with the page and what’s wrong. We’ll check it against the guidance and correct it as quickly as we can, and update the date on the page.