Defibrillators Another option, either instead of or in addition to the installation of a defib unit is to arrange for ALL regular members of the team to attend a CPR course. You will need this expertise to aid the resuscitation of the casualty after applying the defib shocks. Without the defib unit, well maintained CPR may stabilise or conserve the casualty while someone scampers down to collect the defib unit from the nave and professional help arrives.
You should find that your local Fire & Rescue Service can provide CPR training free of charge to a group. And you will still need the CPR knowledge to follow-up the defib shocks and keep the patient alive.