08/12/2025
BASIC LIFE SUPPORT (CPR)
Start compressions as soon as possible when the person is unresponsive and not breathing normally — don’t delay. 
SPEED: how fast should I push?
Aim for 100–120 compressions per minute (roughly 2 compressions every second).
DEPTH: how deep should I push?
Press down to about 5 to 6 cm (in average adults).
RECOIL: what does this mean?
Make sure all of the pressure is released between each compression. By allowing the chest to return to its normal position before pressing down again helps the heart to refill with blood ready for your next compression.
MINIMISE INTERRUPTIONS: does this mean I have to just keep pushing?
Yes, keep chest compressions going with as few breaks as possible - such as to give rescue breaths (no more than 10 seconds) or swapping with another first aider (a second or two). Someone should be pushing unless a defib, or a health professional (ie paramedic) asks you to stand clear.
The best place to learn how to do this is on a first aid course. www.activefirstaid.co.uk/basic-first-aid