Step 1 of 4: Encourage to cough!
 
Encourage them to cough. If this doesn't clear the obstruction, support their upper body with one hand and help them lean forward

Step 2 of 4: Slap it out!
 
Use the heel of your hand to give up to five sharp back blows between their shoulder blades. If coughing doesn’t work, help the casualty bend forward.

Check their mouth to see if there’s anything in there and, if there is, get them to pick it out.
Step 3 of 4: Squeeze it out!
 
 If back blows don’t work, give up to five abdominal thrusts.

Stand behind them.
Link your hands between their tummy button and the bottom of their chest, with your lower 
hand clenched in a fist.
Pull sharply inwards and upwards.
Step 4 of 4: Call for help
 
If they’re still choking after you’ve repeated these steps three times, call 999 or 112 for medical help.

Once you’ve called, continue steps 2 and 3 – back blows and abdominal thrusts – until what’s in there 
has cleared, help arrives or they become unconscious.

If they lose consciousness at any stage, open their airway and check their breathing.

If they’re not breathing, start chest compressions and rescue breaths (CPR - cardiopulmonary resuscitation) 
to try to release whatever’s stuck in there.