When we go to the lakes, we look at the map on the way and liaise with Mountain rescue. We would then warn control that SAR may be needed and they start the ball rolling. If it seems ok and then we get on-scene to a SAR situation, I call on 121.5 to RCC and call the SK. We get there much faster if they are at base. It seems to work, there is nothing political. We don't want a winch, WE ARE AN AMBULANCE, NOT SEARCH AND RESCUE. The issue about flying at night on HEMS. I will say one thing, can the charities afford it?