Call 999 emergency services.
Lay the patient down and give them CPR.
After a minute or two, stop and now put them into the recovery position.
Kneel down next to the patient.
Place the arm nearest to you at a right angle position (hand facing upwards).
Pick up their other hand and place it on their cheek (the one closest to you).
Use your hand to bend their leg (furthest).
Roll the person over onto their side so the bent leg is on top.
Raise patients chin up slightly so he/she can breathe.