It will depend on the service that attends to you.
For an injury in a ski resort there may be a ski patrol that would administer first aid and take you off the mountain to safety. In most cases, the ski patrol is employed by the ski resort and their services are usually provided free of charge. However, the ski patrol is not an approved ambulance provider, so if there is a charge no benefits will be payable.
If an ambulance is dispatched to you via a 000 call, this will automatically be an approved ambulance provider. This means that benefits would generally be paid because the ambulance was called to attend to provide you with immediate professional attention.