Placed what was, in hindsight, a poorly placed cam two thirds up and as I climbed past it the route became slippy. I knew I wouldn’t hold it while searching for another hold so tried to downclimb level with the cam. Unfortunately I came off, taking the cam and the piece of gear before it with me. I woke up on my back at the bottom of the starting gulley, making a death rattle type noise. After coming to and having no memory of the day at first my second kept me still and arranged an evacuation of the crag with the ambulance service HART, assisted by SARA. Luckily I had nothing worse than three fractured ribs (bouncing off the opposite wall of the gulley and landing on my belayer served to slow the descent), but a very scary time for all involved. Can’t fault the emergency services and NHS.